Home / 87,177.59-120,259.06-71,981.58

Finding the Fourth Proportional to 87,177.59, 120,259.06 and 71,981.58

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Solution

The fourth proportional to 87,177.59, 120,259.06 and 71,981.58 is: 99,296.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,177.59 : 120,259.06 = 71,981.58 : x
  2. Step 2: Convert to fraction form
    87,177.59/120,259.06 = 71,981.58/x
  3. Step 3: Cross multiply
    87,177.59x = 120,259.06 × 71,981.58
  4. Step 4: Simplify right side
    87,177.59x = 8,656,436,968.16
  5. Step 5: Solve for x
    x = 8,656,436,968.16/87,177.59
  6. Step 6: Final answer
    x = 99,296.59

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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.