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Finding the Fourth Proportional to 148,191.19, 204,508.80 and 90,819.43

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Solution

The fourth proportional to 148,191.19, 204,508.80 and 90,819.43 is: 125,333.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,191.19 : 204,508.80 = 90,819.43 : x
  2. Step 2: Convert to fraction form
    148,191.19/204,508.80 = 90,819.43/x
  3. Step 3: Cross multiply
    148,191.19x = 204,508.80 × 90,819.43
  4. Step 4: Simplify right side
    148,191.19x = 18,573,372,645.98
  5. Step 5: Solve for x
    x = 18,573,372,645.98/148,191.19
  6. Step 6: Final answer
    x = 125,333.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.