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Finding the Fourth Proportional to 115,389, 159,236.84 and 62,397

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Solution

The fourth proportional to 115,389, 159,236.84 and 62,397 is: 86,107.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,389 : 159,236.84 = 62,397 : x
  2. Step 2: Convert to fraction form
    115,389/159,236.84 = 62,397/x
  3. Step 3: Cross multiply
    115,389x = 159,236.84 × 62,397
  4. Step 4: Simplify right side
    115,389x = 9,935,901,105.48
  5. Step 5: Solve for x
    x = 9,935,901,105.48/115,389
  6. Step 6: Final answer
    x = 86,107.87

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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.