Home / 129,806.33-179,145.27-78,807.24

Finding the Fourth Proportional to 129,806.33, 179,145.27 and 78,807.24

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Solution

The fourth proportional to 129,806.33, 179,145.27 and 78,807.24 is: 108,761.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,806.33 : 179,145.27 = 78,807.24 : x
  2. Step 2: Convert to fraction form
    129,806.33/179,145.27 = 78,807.24/x
  3. Step 3: Cross multiply
    129,806.33x = 179,145.27 × 78,807.24
  4. Step 4: Simplify right side
    129,806.33x = 14,117,944,287.75
  5. Step 5: Solve for x
    x = 14,117,944,287.75/129,806.33
  6. Step 6: Final answer
    x = 108,761.61

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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.