Home / 82,760.12-124,066.35-68,834.39

Finding the Fourth Proportional to 82,760.12, 124,066.35 and 68,834.39

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Solution

The fourth proportional to 82,760.12, 124,066.35 and 68,834.39 is: 103,190.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,760.12 : 124,066.35 = 68,834.39 : x
  2. Step 2: Convert to fraction form
    82,760.12/124,066.35 = 68,834.39/x
  3. Step 3: Cross multiply
    82,760.12x = 124,066.35 × 68,834.39
  4. Step 4: Simplify right side
    82,760.12x = 8,540,031,521.78
  5. Step 5: Solve for x
    x = 8,540,031,521.78/82,760.12
  6. Step 6: Final answer
    x = 103,190.18

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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.