Home / 156,190.50-215,581.77-89,161.38

Finding the Fourth Proportional to 156,190.50, 215,581.77 and 89,161.38

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Solution

The fourth proportional to 156,190.50, 215,581.77 and 89,161.38 is: 123,064.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,190.50 : 215,581.77 = 89,161.38 : x
  2. Step 2: Convert to fraction form
    156,190.50/215,581.77 = 89,161.38/x
  3. Step 3: Cross multiply
    156,190.50x = 215,581.77 × 89,161.38
  4. Step 4: Simplify right side
    156,190.50x = 19,221,568,116.04
  5. Step 5: Solve for x
    x = 19,221,568,116.04/156,190.50
  6. Step 6: Final answer
    x = 123,064.90

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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.