Home / 89,422.35-134,008.77-67,209.72

Finding the Fourth Proportional to 89,422.35, 134,008.77 and 67,209.72

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Solution

The fourth proportional to 89,422.35, 134,008.77 and 67,209.72 is: 100,720.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,422.35 : 134,008.77 = 67,209.72 : x
  2. Step 2: Convert to fraction form
    89,422.35/134,008.77 = 67,209.72/x
  3. Step 3: Cross multiply
    89,422.35x = 134,008.77 × 67,209.72
  4. Step 4: Simplify right side
    89,422.35x = 9,006,691,909.24
  5. Step 5: Solve for x
    x = 9,006,691,909.24/89,422.35
  6. Step 6: Final answer
    x = 100,720.81

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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.