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Finding the Fourth Proportional to 88,000.80, 131,806.80 and 68,215.20

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Solution

The fourth proportional to 88,000.80, 131,806.80 and 68,215.20 is: 102,172.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,000.80 : 131,806.80 = 68,215.20 : x
  2. Step 2: Convert to fraction form
    88,000.80/131,806.80 = 68,215.20/x
  3. Step 3: Cross multiply
    88,000.80x = 131,806.80 × 68,215.20
  4. Step 4: Simplify right side
    88,000.80x = 8,991,227,223.36
  5. Step 5: Solve for x
    x = 8,991,227,223.36/88,000.80
  6. Step 6: Final answer
    x = 102,172.11

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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.