Home / 99,310.46-137,113.90-76,609.94

Finding the Fourth Proportional to 99,310.46, 137,113.90 and 76,609.94

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Solution

The fourth proportional to 99,310.46, 137,113.90 and 76,609.94 is: 105,772.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,310.46 : 137,113.90 = 76,609.94 : x
  2. Step 2: Convert to fraction form
    99,310.46/137,113.90 = 76,609.94/x
  3. Step 3: Cross multiply
    99,310.46x = 137,113.90 × 76,609.94
  4. Step 4: Simplify right side
    99,310.46x = 10,504,286,775.07
  5. Step 5: Solve for x
    x = 10,504,286,775.07/99,310.46
  6. Step 6: Final answer
    x = 105,772.21

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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.