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Finding the Fourth Proportional to 125,113.20, 187,701.80 and 88,249.20

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Solution

The fourth proportional to 125,113.20, 187,701.80 and 88,249.20 is: 132,396.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,113.20 : 187,701.80 = 88,249.20 : x
  2. Step 2: Convert to fraction form
    125,113.20/187,701.80 = 88,249.20/x
  3. Step 3: Cross multiply
    125,113.20x = 187,701.80 × 88,249.20
  4. Step 4: Simplify right side
    125,113.20x = 16,564,533,688.56
  5. Step 5: Solve for x
    x = 16,564,533,688.56/125,113.20
  6. Step 6: Final answer
    x = 132,396.37

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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.