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Finding the Fourth Proportional to 162,057.20, 243,085.80 and 68,550.80

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Solution

The fourth proportional to 162,057.20, 243,085.80 and 68,550.80 is: 102,826.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,057.20 : 243,085.80 = 68,550.80 : x
  2. Step 2: Convert to fraction form
    162,057.20/243,085.80 = 68,550.80/x
  3. Step 3: Cross multiply
    162,057.20x = 243,085.80 × 68,550.80
  4. Step 4: Simplify right side
    162,057.20x = 16,663,726,058.64
  5. Step 5: Solve for x
    x = 16,663,726,058.64/162,057.20
  6. Step 6: Final answer
    x = 102,826.20

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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.