Home / 129,693.38-178,976.88-70,077.38

Finding the Fourth Proportional to 129,693.38, 178,976.88 and 70,077.38

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Solution

The fourth proportional to 129,693.38, 178,976.88 and 70,077.38 is: 96,706.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,693.38 : 178,976.88 = 70,077.38 : x
  2. Step 2: Convert to fraction form
    129,693.38/178,976.88 = 70,077.38/x
  3. Step 3: Cross multiply
    129,693.38x = 178,976.88 × 70,077.38
  4. Step 4: Simplify right side
    129,693.38x = 12,542,229,936.09
  5. Step 5: Solve for x
    x = 12,542,229,936.09/129,693.38
  6. Step 6: Final answer
    x = 96,706.79

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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.