Home / 91,395.18-125,844.96-80,000.91

Finding the Fourth Proportional to 91,395.18, 125,844.96 and 80,000.91

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Solution

The fourth proportional to 91,395.18, 125,844.96 and 80,000.91 is: 110,155.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,395.18 : 125,844.96 = 80,000.91 : x
  2. Step 2: Convert to fraction form
    91,395.18/125,844.96 = 80,000.91/x
  3. Step 3: Cross multiply
    91,395.18x = 125,844.96 × 80,000.91
  4. Step 4: Simplify right side
    91,395.18x = 10,067,711,318.91
  5. Step 5: Solve for x
    x = 10,067,711,318.91/91,395.18
  6. Step 6: Final answer
    x = 110,155.82

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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.