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Finding the Fourth Proportional to 159,591.70, 220,236.49 and 87,972.92

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Solution

The fourth proportional to 159,591.70, 220,236.49 and 87,972.92 is: 121,402.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,591.70 : 220,236.49 = 87,972.92 : x
  2. Step 2: Convert to fraction form
    159,591.70/220,236.49 = 87,972.92/x
  3. Step 3: Cross multiply
    159,591.70x = 220,236.49 × 87,972.92
  4. Step 4: Simplify right side
    159,591.70x = 19,374,846,950.52
  5. Step 5: Solve for x
    x = 19,374,846,950.52/159,591.70
  6. Step 6: Final answer
    x = 121,402.60

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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.