Home / 113,136.62-156,121.02-62,139.42

Finding the Fourth Proportional to 113,136.62, 156,121.02 and 62,139.42

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Solution

The fourth proportional to 113,136.62, 156,121.02 and 62,139.42 is: 85,748.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,136.62 : 156,121.02 = 62,139.42 : x
  2. Step 2: Convert to fraction form
    113,136.62/156,121.02 = 62,139.42/x
  3. Step 3: Cross multiply
    113,136.62x = 156,121.02 × 62,139.42
  4. Step 4: Simplify right side
    113,136.62x = 9,701,269,632.61
  5. Step 5: Solve for x
    x = 9,701,269,632.61/113,136.62
  6. Step 6: Final answer
    x = 85,748.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.