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Finding the Fourth Proportional to 121,656.70, 182,485.05 and 88,219.90

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Solution

The fourth proportional to 121,656.70, 182,485.05 and 88,219.90 is: 132,329.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,656.70 : 182,485.05 = 88,219.90 : x
  2. Step 2: Convert to fraction form
    121,656.70/182,485.05 = 88,219.90/x
  3. Step 3: Cross multiply
    121,656.70x = 182,485.05 × 88,219.90
  4. Step 4: Simplify right side
    121,656.70x = 16,098,812,862.50
  5. Step 5: Solve for x
    x = 16,098,812,862.50/121,656.70
  6. Step 6: Final answer
    x = 132,329.85

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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.