Home / 84,046.20-125,939.70-72,900.60

Finding the Fourth Proportional to 84,046.20, 125,939.70 and 72,900.60

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Solution

The fourth proportional to 84,046.20, 125,939.70 and 72,900.60 is: 109,238.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,046.20 : 125,939.70 = 72,900.60 : x
  2. Step 2: Convert to fraction form
    84,046.20/125,939.70 = 72,900.60/x
  3. Step 3: Cross multiply
    84,046.20x = 125,939.70 × 72,900.60
  4. Step 4: Simplify right side
    84,046.20x = 9,181,079,693.82
  5. Step 5: Solve for x
    x = 9,181,079,693.82/84,046.20
  6. Step 6: Final answer
    x = 109,238.49

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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.