Home / 81,374.20-122,061.30-68,252.20

Finding the Fourth Proportional to 81,374.20, 122,061.30 and 68,252.20

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Solution

The fourth proportional to 81,374.20, 122,061.30 and 68,252.20 is: 102,378.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,374.20 : 122,061.30 = 68,252.20 : x
  2. Step 2: Convert to fraction form
    81,374.20/122,061.30 = 68,252.20/x
  3. Step 3: Cross multiply
    81,374.20x = 122,061.30 × 68,252.20
  4. Step 4: Simplify right side
    81,374.20x = 8,330,952,259.86
  5. Step 5: Solve for x
    x = 8,330,952,259.86/81,374.20
  6. Step 6: Final answer
    x = 102,378.30

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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.