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Finding the Fourth Proportional to 115,385, 159,231.30 and 62,393

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Solution

The fourth proportional to 115,385, 159,231.30 and 62,393 is: 86,102.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,385 : 159,231.30 = 62,393 : x
  2. Step 2: Convert to fraction form
    115,385/159,231.30 = 62,393/x
  3. Step 3: Cross multiply
    115,385x = 159,231.30 × 62,393
  4. Step 4: Simplify right side
    115,385x = 9,934,918,500.90
  5. Step 5: Solve for x
    x = 9,934,918,500.90/115,385
  6. Step 6: Final answer
    x = 86,102.34

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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.