Home / 115,640.45-159,610.79-75,284.27

Finding the Fourth Proportional to 115,640.45, 159,610.79 and 75,284.27

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Solution

The fourth proportional to 115,640.45, 159,610.79 and 75,284.27 is: 103,909.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,640.45 : 159,610.79 = 75,284.27 : x
  2. Step 2: Convert to fraction form
    115,640.45/159,610.79 = 75,284.27/x
  3. Step 3: Cross multiply
    115,640.45x = 159,610.79 × 75,284.27
  4. Step 4: Simplify right side
    115,640.45x = 12,016,181,432.85
  5. Step 5: Solve for x
    x = 12,016,181,432.85/115,640.45
  6. Step 6: Final answer
    x = 103,909.85

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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.