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Finding the Fourth Proportional to 115,645.43, 159,610.41 and 67,275.42

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Solution

The fourth proportional to 115,645.43, 159,610.41 and 67,275.42 is: 92,851.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,645.43 : 159,610.41 = 67,275.42 : x
  2. Step 2: Convert to fraction form
    115,645.43/159,610.41 = 67,275.42/x
  3. Step 3: Cross multiply
    115,645.43x = 159,610.41 × 67,275.42
  4. Step 4: Simplify right side
    115,645.43x = 10,737,857,369.12
  5. Step 5: Solve for x
    x = 10,737,857,369.12/115,645.43
  6. Step 6: Final answer
    x = 92,851.55

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1.5x scale

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.