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Finding the Fourth Proportional to 125,000.70, 187,539.45 and 98,715.90

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Solution

The fourth proportional to 125,000.70, 187,539.45 and 98,715.90 is: 148,104.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,000.70 : 187,539.45 = 98,715.90 : x
  2. Step 2: Convert to fraction form
    125,000.70/187,539.45 = 98,715.90/x
  3. Step 3: Cross multiply
    125,000.70x = 187,539.45 × 98,715.90
  4. Step 4: Simplify right side
    125,000.70x = 18,513,125,592.26
  5. Step 5: Solve for x
    x = 18,513,125,592.26/125,000.70
  6. Step 6: Final answer
    x = 148,104.18

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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.