Home / 98,456.40-147,761.76-68,680.56

Finding the Fourth Proportional to 98,456.40, 147,761.76 and 68,680.56

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Solution

The fourth proportional to 98,456.40, 147,761.76 and 68,680.56 is: 103,074.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,456.40 : 147,761.76 = 68,680.56 : x
  2. Step 2: Convert to fraction form
    98,456.40/147,761.76 = 68,680.56/x
  3. Step 3: Cross multiply
    98,456.40x = 147,761.76 × 68,680.56
  4. Step 4: Simplify right side
    98,456.40x = 10,148,360,423.39
  5. Step 5: Solve for x
    x = 10,148,360,423.39/98,456.40
  6. Step 6: Final answer
    x = 103,074.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.