Home / 135,172.09-186,533.79-74,740.73

Finding the Fourth Proportional to 135,172.09, 186,533.79 and 74,740.73

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Solution

The fourth proportional to 135,172.09, 186,533.79 and 74,740.73 is: 103,140.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,172.09 : 186,533.79 = 74,740.73 : x
  2. Step 2: Convert to fraction form
    135,172.09/186,533.79 = 74,740.73/x
  3. Step 3: Cross multiply
    135,172.09x = 186,533.79 × 74,740.73
  4. Step 4: Simplify right side
    135,172.09x = 13,941,670,421.32
  5. Step 5: Solve for x
    x = 13,941,670,421.32/135,172.09
  6. Step 6: Final answer
    x = 103,140.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.