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Finding the Fourth Proportional to 96,752.80, 144,937.20 and 85,207.20

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Solution

The fourth proportional to 96,752.80, 144,937.20 and 85,207.20 is: 127,641.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,752.80 : 144,937.20 = 85,207.20 : x
  2. Step 2: Convert to fraction form
    96,752.80/144,937.20 = 85,207.20/x
  3. Step 3: Cross multiply
    96,752.80x = 144,937.20 × 85,207.20
  4. Step 4: Simplify right side
    96,752.80x = 12,349,692,987.84
  5. Step 5: Solve for x
    x = 12,349,692,987.84/96,752.80
  6. Step 6: Final answer
    x = 127,641.71

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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.