def is_homogenized(coin_dict):
    """
    Checks a coin dictionary to find out if there's only 1 type of coin with a value above 0.

    Arguments:
        coin_dict (dict): A dictionary consisting of all 4 coin types.
    
    Returns:
        is_homogenized (boolean): True or False
    """
    num = 0
    for coin_value in coin_dict.values():
        if coin_value > 0:
            num += 1
    if num > 1:
        return False
    else:
        return True