Home / 83,142.20-124,713.30-74,329.40

Finding the Fourth Proportional to 83,142.20, 124,713.30 and 74,329.40

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Solution

The fourth proportional to 83,142.20, 124,713.30 and 74,329.40 is: 111,494.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,142.20 : 124,713.30 = 74,329.40 : x
  2. Step 2: Convert to fraction form
    83,142.20/124,713.30 = 74,329.40/x
  3. Step 3: Cross multiply
    83,142.20x = 124,713.30 × 74,329.40
  4. Step 4: Simplify right side
    83,142.20x = 9,269,864,761.02
  5. Step 5: Solve for x
    x = 9,269,864,761.02/83,142.20
  6. Step 6: Final answer
    x = 111,494.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.