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Finding the Fourth Proportional to 159,064.74, 219,513.53 and 87,446.57

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Solution

The fourth proportional to 159,064.74, 219,513.53 and 87,446.57 is: 120,678.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,064.74 : 219,513.53 = 87,446.57 : x
  2. Step 2: Convert to fraction form
    159,064.74/219,513.53 = 87,446.57/x
  3. Step 3: Cross multiply
    159,064.74x = 219,513.53 × 87,446.57
  4. Step 4: Simplify right side
    159,064.74x = 19,195,703,732.29
  5. Step 5: Solve for x
    x = 19,195,703,732.29/159,064.74
  6. Step 6: Final answer
    x = 120,678.56

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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.