Home / 156,188.83-215,532.07-91,649.38

Finding the Fourth Proportional to 156,188.83, 215,532.07 and 91,649.38

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Solution

The fourth proportional to 156,188.83, 215,532.07 and 91,649.38 is: 126,471.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,188.83 : 215,532.07 = 91,649.38 : x
  2. Step 2: Convert to fraction form
    156,188.83/215,532.07 = 91,649.38/x
  3. Step 3: Cross multiply
    156,188.83x = 215,532.07 × 91,649.38
  4. Step 4: Simplify right side
    156,188.83x = 19,753,380,585.62
  5. Step 5: Solve for x
    x = 19,753,380,585.62/156,188.83
  6. Step 6: Final answer
    x = 126,471.15

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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.