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Finding the Fourth Proportional to 129,815.60, 194,665.80 and 59,658.80

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Solution

The fourth proportional to 129,815.60, 194,665.80 and 59,658.80 is: 89,461.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,815.60 : 194,665.80 = 59,658.80 : x
  2. Step 2: Convert to fraction form
    129,815.60/194,665.80 = 59,658.80/x
  3. Step 3: Cross multiply
    129,815.60x = 194,665.80 × 59,658.80
  4. Step 4: Simplify right side
    129,815.60x = 11,613,528,029.04
  5. Step 5: Solve for x
    x = 11,613,528,029.04/129,815.60
  6. Step 6: Final answer
    x = 89,461.73

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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.