Home / 98,818.97-136,257.30-78,676.70

Finding the Fourth Proportional to 98,818.97, 136,257.30 and 78,676.70

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Solution

The fourth proportional to 98,818.97, 136,257.30 and 78,676.70 is: 108,483.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,818.97 : 136,257.30 = 78,676.70 : x
  2. Step 2: Convert to fraction form
    98,818.97/136,257.30 = 78,676.70/x
  3. Step 3: Cross multiply
    98,818.97x = 136,257.30 × 78,676.70
  4. Step 4: Simplify right side
    98,818.97x = 10,720,274,033.62
  5. Step 5: Solve for x
    x = 10,720,274,033.62/98,818.97
  6. Step 6: Final answer
    x = 108,483.97

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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.