Home / 129,662.06-179,004.13-89,591.22

Finding the Fourth Proportional to 129,662.06, 179,004.13 and 89,591.22

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Solution

The fourth proportional to 129,662.06, 179,004.13 and 89,591.22 is: 123,684.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,662.06 : 179,004.13 = 89,591.22 : x
  2. Step 2: Convert to fraction form
    129,662.06/179,004.13 = 89,591.22/x
  3. Step 3: Cross multiply
    129,662.06x = 179,004.13 × 89,591.22
  4. Step 4: Simplify right side
    129,662.06x = 16,037,198,167.76
  5. Step 5: Solve for x
    x = 16,037,198,167.76/129,662.06
  6. Step 6: Final answer
    x = 123,684.59

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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.