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Finding the Fourth Proportional to 131,034.76, 180,832.98 and 71,418.76

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Solution

The fourth proportional to 131,034.76, 180,832.98 and 71,418.76 is: 98,560.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,034.76 : 180,832.98 = 71,418.76 : x
  2. Step 2: Convert to fraction form
    131,034.76/180,832.98 = 71,418.76/x
  3. Step 3: Cross multiply
    131,034.76x = 180,832.98 × 71,418.76
  4. Step 4: Simplify right side
    131,034.76x = 12,914,867,198.70
  5. Step 5: Solve for x
    x = 12,914,867,198.70/131,034.76
  6. Step 6: Final answer
    x = 98,560.62

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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.