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Finding the Fourth Proportional to 144,398.60, 216,593.85 and 65,512.70

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Solution

The fourth proportional to 144,398.60, 216,593.85 and 65,512.70 is: 98,267.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,398.60 : 216,593.85 = 65,512.70 : x
  2. Step 2: Convert to fraction form
    144,398.60/216,593.85 = 65,512.70/x
  3. Step 3: Cross multiply
    144,398.60x = 216,593.85 × 65,512.70
  4. Step 4: Simplify right side
    144,398.60x = 14,189,647,916.90
  5. Step 5: Solve for x
    x = 14,189,647,916.90/144,398.60
  6. Step 6: Final answer
    x = 98,267.21

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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.