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Finding the Fourth Proportional to 115,645.66, 159,610.73 and 67,275.65

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Solution

The fourth proportional to 115,645.66, 159,610.73 and 67,275.65 is: 92,851.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,645.66 : 159,610.73 = 67,275.65 : x
  2. Step 2: Convert to fraction form
    115,645.66/159,610.73 = 67,275.65/x
  3. Step 3: Cross multiply
    115,645.66x = 159,610.73 × 67,275.65
  4. Step 4: Simplify right side
    115,645.66x = 10,737,916,060.86
  5. Step 5: Solve for x
    x = 10,737,916,060.86/115,645.66
  6. Step 6: Final answer
    x = 92,851.88

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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.