Home / 115,932.75-159,987.20-65,631.75

Finding the Fourth Proportional to 115,932.75, 159,987.20 and 65,631.75

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Solution

The fourth proportional to 115,932.75, 159,987.20 and 65,631.75 is: 90,571.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,932.75 : 159,987.20 = 65,631.75 : x
  2. Step 2: Convert to fraction form
    115,932.75/159,987.20 = 65,631.75/x
  3. Step 3: Cross multiply
    115,932.75x = 159,987.20 × 65,631.75
  4. Step 4: Simplify right side
    115,932.75x = 10,500,239,585.44
  5. Step 5: Solve for x
    x = 10,500,239,585.44/115,932.75
  6. Step 6: Final answer
    x = 90,571.82

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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.