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Finding the Fourth Proportional to 115,386, 159,232.68 and 62,394

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Solution

The fourth proportional to 115,386, 159,232.68 and 62,394 is: 86,103.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,386 : 159,232.68 = 62,394 : x
  2. Step 2: Convert to fraction form
    115,386/159,232.68 = 62,394/x
  3. Step 3: Cross multiply
    115,386x = 159,232.68 × 62,394
  4. Step 4: Simplify right side
    115,386x = 9,935,163,835.92
  5. Step 5: Solve for x
    x = 9,935,163,835.92/115,386
  6. Step 6: Final answer
    x = 86,103.72

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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.