Home / 158,359.08-218,535.20-85,761.74

Finding the Fourth Proportional to 158,359.08, 218,535.20 and 85,761.74

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Solution

The fourth proportional to 158,359.08, 218,535.20 and 85,761.74 is: 118,351.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,359.08 : 218,535.20 = 85,761.74 : x
  2. Step 2: Convert to fraction form
    158,359.08/218,535.20 = 85,761.74/x
  3. Step 3: Cross multiply
    158,359.08x = 218,535.20 × 85,761.74
  4. Step 4: Simplify right side
    158,359.08x = 18,741,959,120.78
  5. Step 5: Solve for x
    x = 18,741,959,120.78/158,359.08
  6. Step 6: Final answer
    x = 118,351.02

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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.