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Finding the Fourth Proportional to 129,997.60, 194,938.80 and 59,898.40

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Solution

The fourth proportional to 129,997.60, 194,938.80 and 59,898.40 is: 89,821.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,997.60 : 194,938.80 = 59,898.40 : x
  2. Step 2: Convert to fraction form
    129,997.60/194,938.80 = 59,898.40/x
  3. Step 3: Cross multiply
    129,997.60x = 194,938.80 × 59,898.40
  4. Step 4: Simplify right side
    129,997.60x = 11,676,522,217.92
  5. Step 5: Solve for x
    x = 11,676,522,217.92/129,997.60
  6. Step 6: Final answer
    x = 89,821.06

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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.