Home / 99,481.62-137,335.35-76,769.58

Finding the Fourth Proportional to 99,481.62, 137,335.35 and 76,769.58

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Solution

The fourth proportional to 99,481.62, 137,335.35 and 76,769.58 is: 105,981.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,481.62 : 137,335.35 = 76,769.58 : x
  2. Step 2: Convert to fraction form
    99,481.62/137,335.35 = 76,769.58/x
  3. Step 3: Cross multiply
    99,481.62x = 137,335.35 × 76,769.58
  4. Step 4: Simplify right side
    99,481.62x = 10,543,177,138.65
  5. Step 5: Solve for x
    x = 10,543,177,138.65/99,481.62
  6. Step 6: Final answer
    x = 105,981.16

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1.5x scale

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.