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Finding the Fourth Proportional to 125,136.56, 187,510.44 and 68,929.04

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Solution

The fourth proportional to 125,136.56, 187,510.44 and 68,929.04 is: 103,286.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,136.56 : 187,510.44 = 68,929.04 : x
  2. Step 2: Convert to fraction form
    125,136.56/187,510.44 = 68,929.04/x
  3. Step 3: Cross multiply
    125,136.56x = 187,510.44 × 68,929.04
  4. Step 4: Simplify right side
    125,136.56x = 12,924,914,619.18
  5. Step 5: Solve for x
    x = 12,924,914,619.18/125,136.56
  6. Step 6: Final answer
    x = 103,286.48

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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.