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Finding the Fourth Proportional to 129,700.98, 194,493.15 and 125,618.58

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Solution

The fourth proportional to 129,700.98, 194,493.15 and 125,618.58 is: 188,371.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,700.98 : 194,493.15 = 125,618.58 : x
  2. Step 2: Convert to fraction form
    129,700.98/194,493.15 = 125,618.58/x
  3. Step 3: Cross multiply
    129,700.98x = 194,493.15 × 125,618.58
  4. Step 4: Simplify right side
    129,700.98x = 24,431,953,322.73
  5. Step 5: Solve for x
    x = 24,431,953,322.73/129,700.98
  6. Step 6: Final answer
    x = 188,371.39

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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.