Home / 129,995.97-179,395.65-76,281.90

Finding the Fourth Proportional to 129,995.97, 179,395.65 and 76,281.90

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Solution

The fourth proportional to 129,995.97, 179,395.65 and 76,281.90 is: 105,269.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,995.97 : 179,395.65 = 76,281.90 : x
  2. Step 2: Convert to fraction form
    129,995.97/179,395.65 = 76,281.90/x
  3. Step 3: Cross multiply
    129,995.97x = 179,395.65 × 76,281.90
  4. Step 4: Simplify right side
    129,995.97x = 13,684,641,033.74
  5. Step 5: Solve for x
    x = 13,684,641,033.74/129,995.97
  6. Step 6: Final answer
    x = 105,269.73

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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.