Home / 115,251.30-158,990.27-77,020.25

Finding the Fourth Proportional to 115,251.30, 158,990.27 and 77,020.25

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Solution

The fourth proportional to 115,251.30, 158,990.27 and 77,020.25 is: 106,250.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,251.30 : 158,990.27 = 77,020.25 : x
  2. Step 2: Convert to fraction form
    115,251.30/158,990.27 = 77,020.25/x
  3. Step 3: Cross multiply
    115,251.30x = 158,990.27 × 77,020.25
  4. Step 4: Simplify right side
    115,251.30x = 12,245,469,162.91
  5. Step 5: Solve for x
    x = 12,245,469,162.91/115,251.30
  6. Step 6: Final answer
    x = 106,250.16

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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.