Home / 82,758.12-124,063.35-68,832.39

Finding the Fourth Proportional to 82,758.12, 124,063.35 and 68,832.39

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Solution

The fourth proportional to 82,758.12, 124,063.35 and 68,832.39 is: 103,187.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,758.12 : 124,063.35 = 68,832.39 : x
  2. Step 2: Convert to fraction form
    82,758.12/124,063.35 = 68,832.39/x
  3. Step 3: Cross multiply
    82,758.12x = 124,063.35 × 68,832.39
  4. Step 4: Simplify right side
    82,758.12x = 8,539,576,891.91
  5. Step 5: Solve for x
    x = 8,539,576,891.91/82,758.12
  6. Step 6: Final answer
    x = 103,187.18

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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.