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Finding the Fourth Proportional to 180,951.80, 271,427.70 and 81,005.90

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Solution

The fourth proportional to 180,951.80, 271,427.70 and 81,005.90 is: 121,508.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,951.80 : 271,427.70 = 81,005.90 : x
  2. Step 2: Convert to fraction form
    180,951.80/271,427.70 = 81,005.90/x
  3. Step 3: Cross multiply
    180,951.80x = 271,427.70 × 81,005.90
  4. Step 4: Simplify right side
    180,951.80x = 21,987,245,123.43
  5. Step 5: Solve for x
    x = 21,987,245,123.43/180,951.80
  6. Step 6: Final answer
    x = 121,508.85

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1.5x scale

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.