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Finding the Third Proportional to 83,547.75 and 129,430.13

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Solution

The third proportional to 83,547.75 and 129,430.13 is: 200,509.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,547.75 : 129,430.13 = 129,430.13 : x
  2. Step 2: Convert to fraction form
    83,547.75/129,430.13 = 129,430.13/x
  3. Step 3: Cross multiply
    83,547.75x = 129,430.13 × 129,430.13
  4. Step 4: Simplify right side
    83,547.75x = 16,752,157,257.52
  5. Step 5: Solve for x
    x = 16,752,157,257.52/83,547.75
  6. Step 6: Final answer
    x = 200,509.97

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.