Home / 171,077.28-256,115.52-99,781.92

Finding the Fourth Proportional to 171,077.28, 256,115.52 and 99,781.92

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Solution

The fourth proportional to 171,077.28, 256,115.52 and 99,781.92 is: 149,381.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,077.28 : 256,115.52 = 99,781.92 : x
  2. Step 2: Convert to fraction form
    171,077.28/256,115.52 = 99,781.92/x
  3. Step 3: Cross multiply
    171,077.28x = 256,115.52 × 99,781.92
  4. Step 4: Simplify right side
    171,077.28x = 25,555,698,327.40
  5. Step 5: Solve for x
    x = 25,555,698,327.40/171,077.28
  6. Step 6: Final answer
    x = 149,381.02

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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.