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Finding the Fourth Proportional to 92,500.20, 138,750.12 and 71,470.80

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Solution

The fourth proportional to 92,500.20, 138,750.12 and 71,470.80 is: 107,206.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,500.20 : 138,750.12 = 71,470.80 : x
  2. Step 2: Convert to fraction form
    92,500.20/138,750.12 = 71,470.80/x
  3. Step 3: Cross multiply
    92,500.20x = 138,750.12 × 71,470.80
  4. Step 4: Simplify right side
    92,500.20x = 9,916,582,076.50
  5. Step 5: Solve for x
    x = 9,916,582,076.50/92,500.20
  6. Step 6: Final answer
    x = 107,206.06

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1.5x scale

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.