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Finding the Fourth Proportional to 121,982.90, 182,715.15 and 101,246.90

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Solution

The fourth proportional to 121,982.90, 182,715.15 and 101,246.90 is: 151,655.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,982.90 : 182,715.15 = 101,246.90 : x
  2. Step 2: Convert to fraction form
    121,982.90/182,715.15 = 101,246.90/x
  3. Step 3: Cross multiply
    121,982.90x = 182,715.15 × 101,246.90
  4. Step 4: Simplify right side
    121,982.90x = 18,499,342,520.54
  5. Step 5: Solve for x
    x = 18,499,342,520.54/121,982.90
  6. Step 6: Final answer
    x = 151,655.21

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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.