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Finding the Fourth Proportional to 121,446.80, 182,137.80 and 42,552.80

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Solution

The fourth proportional to 121,446.80, 182,137.80 and 42,552.80 is: 63,817.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,446.80 : 182,137.80 = 42,552.80 : x
  2. Step 2: Convert to fraction form
    121,446.80/182,137.80 = 42,552.80/x
  3. Step 3: Cross multiply
    121,446.80x = 182,137.80 × 42,552.80
  4. Step 4: Simplify right side
    121,446.80x = 7,750,473,375.84
  5. Step 5: Solve for x
    x = 7,750,473,375.84/121,446.80
  6. Step 6: Final answer
    x = 63,817.85

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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.