Home / 82,083.20-123,132-60,169.28

Finding the Fourth Proportional to 82,083.20, 123,132 and 60,169.28

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Solution

The fourth proportional to 82,083.20, 123,132 and 60,169.28 is: 90,259.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,083.20 : 123,132 = 60,169.28 : x
  2. Step 2: Convert to fraction form
    82,083.20/123,132 = 60,169.28/x
  3. Step 3: Cross multiply
    82,083.20x = 123,132 × 60,169.28
  4. Step 4: Simplify right side
    82,083.20x = 7,408,763,784.96
  5. Step 5: Solve for x
    x = 7,408,763,784.96/82,083.20
  6. Step 6: Final answer
    x = 90,259.20

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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.