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Finding the Fourth Proportional to 123,545.52, 170,304.12 and 75,710.16

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Solution

The fourth proportional to 123,545.52, 170,304.12 and 75,710.16 is: 104,364.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,545.52 : 170,304.12 = 75,710.16 : x
  2. Step 2: Convert to fraction form
    123,545.52/170,304.12 = 75,710.16/x
  3. Step 3: Cross multiply
    123,545.52x = 170,304.12 × 75,710.16
  4. Step 4: Simplify right side
    123,545.52x = 12,893,752,173.86
  5. Step 5: Solve for x
    x = 12,893,752,173.86/123,545.52
  6. Step 6: Final answer
    x = 104,364.38

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1.5x scale

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.