Home / 131,641.32-181,591.20-80,678.75

Finding the Fourth Proportional to 131,641.32, 181,591.20 and 80,678.75

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Solution

The fourth proportional to 131,641.32, 181,591.20 and 80,678.75 is: 111,291.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,641.32 : 181,591.20 = 80,678.75 : x
  2. Step 2: Convert to fraction form
    131,641.32/181,591.20 = 80,678.75/x
  3. Step 3: Cross multiply
    131,641.32x = 181,591.20 × 80,678.75
  4. Step 4: Simplify right side
    131,641.32x = 14,650,550,119.04
  5. Step 5: Solve for x
    x = 14,650,550,119.04/131,641.32
  6. Step 6: Final answer
    x = 111,291.43

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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.