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Finding the Fourth Proportional to 129,737.35, 194,612.10 and 40,997.80

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Solution

The fourth proportional to 129,737.35, 194,612.10 and 40,997.80 is: 61,498.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,737.35 : 194,612.10 = 40,997.80 : x
  2. Step 2: Convert to fraction form
    129,737.35/194,612.10 = 40,997.80/x
  3. Step 3: Cross multiply
    129,737.35x = 194,612.10 × 40,997.80
  4. Step 4: Simplify right side
    129,737.35x = 7,978,667,953.38
  5. Step 5: Solve for x
    x = 7,978,667,953.38/129,737.35
  6. Step 6: Final answer
    x = 61,498.62

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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.