Home / 125,358.28-172,967.81-74,387.59

Finding the Fourth Proportional to 125,358.28, 172,967.81 and 74,387.59

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Solution

The fourth proportional to 125,358.28, 172,967.81 and 74,387.59 is: 102,639.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,358.28 : 172,967.81 = 74,387.59 : x
  2. Step 2: Convert to fraction form
    125,358.28/172,967.81 = 74,387.59/x
  3. Step 3: Cross multiply
    125,358.28x = 172,967.81 × 74,387.59
  4. Step 4: Simplify right side
    125,358.28x = 12,866,657,729.12
  5. Step 5: Solve for x
    x = 12,866,657,729.12/125,358.28
  6. Step 6: Final answer
    x = 102,639.08

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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.