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Finding the Fourth Proportional to 187,689.68, 281,508.60 and 47,439.80

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Solution

The fourth proportional to 187,689.68, 281,508.60 and 47,439.80 is: 71,153.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,689.68 : 281,508.60 = 47,439.80 : x
  2. Step 2: Convert to fraction form
    187,689.68/281,508.60 = 47,439.80/x
  3. Step 3: Cross multiply
    187,689.68x = 281,508.60 × 47,439.80
  4. Step 4: Simplify right side
    187,689.68x = 13,354,711,682.28
  5. Step 5: Solve for x
    x = 13,354,711,682.28/187,689.68
  6. Step 6: Final answer
    x = 71,153.15

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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.