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Finding the Fourth Proportional to 231,937.60, 320,073.74 and 129,963.90

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Solution

The fourth proportional to 231,937.60, 320,073.74 and 129,963.90 is: 179,350.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,937.60 : 320,073.74 = 129,963.90 : x
  2. Step 2: Convert to fraction form
    231,937.60/320,073.74 = 129,963.90/x
  3. Step 3: Cross multiply
    231,937.60x = 320,073.74 × 129,963.90
  4. Step 4: Simplify right side
    231,937.60x = 41,598,031,537.99
  5. Step 5: Solve for x
    x = 41,598,031,537.99/231,937.60
  6. Step 6: Final answer
    x = 179,350.10

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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.