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Finding the Fourth Proportional to 159,591.79, 220,238.15 and 87,974.38

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Solution

The fourth proportional to 159,591.79, 220,238.15 and 87,974.38 is: 121,405.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,591.79 : 220,238.15 = 87,974.38 : x
  2. Step 2: Convert to fraction form
    159,591.79/220,238.15 = 87,974.38/x
  3. Step 3: Cross multiply
    159,591.79x = 220,238.15 × 87,974.38
  4. Step 4: Simplify right side
    159,591.79x = 19,375,313,157.53
  5. Step 5: Solve for x
    x = 19,375,313,157.53/159,591.79
  6. Step 6: Final answer
    x = 121,405.45

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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.