Home / 82,772.16-124,158.24-68,120.96

Finding the Fourth Proportional to 82,772.16, 124,158.24 and 68,120.96

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Solution

The fourth proportional to 82,772.16, 124,158.24 and 68,120.96 is: 102,181.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,772.16 : 124,158.24 = 68,120.96 : x
  2. Step 2: Convert to fraction form
    82,772.16/124,158.24 = 68,120.96/x
  3. Step 3: Cross multiply
    82,772.16x = 124,158.24 × 68,120.96
  4. Step 4: Simplify right side
    82,772.16x = 8,457,778,500.71
  5. Step 5: Solve for x
    x = 8,457,778,500.71/82,772.16
  6. Step 6: Final answer
    x = 102,181.44

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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.