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Finding the Fourth Proportional to 121,446.70, 182,170.05 and 88,009.90

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Solution

The fourth proportional to 121,446.70, 182,170.05 and 88,009.90 is: 132,014.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,446.70 : 182,170.05 = 88,009.90 : x
  2. Step 2: Convert to fraction form
    121,446.70/182,170.05 = 88,009.90/x
  3. Step 3: Cross multiply
    121,446.70x = 182,170.05 × 88,009.90
  4. Step 4: Simplify right side
    121,446.70x = 16,032,767,883.50
  5. Step 5: Solve for x
    x = 16,032,767,883.50/121,446.70
  6. Step 6: Final answer
    x = 132,014.85

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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.