Home / 120,278.17-165,982.82-66,561.80

Finding the Fourth Proportional to 120,278.17, 165,982.82 and 66,561.80

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Solution

The fourth proportional to 120,278.17, 165,982.82 and 66,561.80 is: 91,854.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,278.17 : 165,982.82 = 66,561.80 : x
  2. Step 2: Convert to fraction form
    120,278.17/165,982.82 = 66,561.80/x
  3. Step 3: Cross multiply
    120,278.17x = 165,982.82 × 66,561.80
  4. Step 4: Simplify right side
    120,278.17x = 11,048,115,413.62
  5. Step 5: Solve for x
    x = 11,048,115,413.62/120,278.17
  6. Step 6: Final answer
    x = 91,854.70

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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.