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Finding the Fourth Proportional to 83,067.10, 124,600.65 and 81,609.10

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Solution

The fourth proportional to 83,067.10, 124,600.65 and 81,609.10 is: 122,413.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,067.10 : 124,600.65 = 81,609.10 : x
  2. Step 2: Convert to fraction form
    83,067.10/124,600.65 = 81,609.10/x
  3. Step 3: Cross multiply
    83,067.10x = 124,600.65 × 81,609.10
  4. Step 4: Simplify right side
    83,067.10x = 10,168,546,905.92
  5. Step 5: Solve for x
    x = 10,168,546,905.92/83,067.10
  6. Step 6: Final answer
    x = 122,413.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.