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Finding the Fourth Proportional to 159,595.70, 220,239.32 and 87,982.38

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Solution

The fourth proportional to 159,595.70, 220,239.32 and 87,982.38 is: 121,414.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,595.70 : 220,239.32 = 87,982.38 : x
  2. Step 2: Convert to fraction form
    159,595.70/220,239.32 = 87,982.38/x
  3. Step 3: Cross multiply
    159,595.70x = 220,239.32 × 87,982.38
  4. Step 4: Simplify right side
    159,595.70x = 19,377,179,543.18
  5. Step 5: Solve for x
    x = 19,377,179,543.18/159,595.70
  6. Step 6: Final answer
    x = 121,414.17

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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.