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Finding the Fourth Proportional to 101,600.80, 152,401.20 and 66,171.40

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Solution

The fourth proportional to 101,600.80, 152,401.20 and 66,171.40 is: 99,257.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,600.80 : 152,401.20 = 66,171.40 : x
  2. Step 2: Convert to fraction form
    101,600.80/152,401.20 = 66,171.40/x
  3. Step 3: Cross multiply
    101,600.80x = 152,401.20 × 66,171.40
  4. Step 4: Simplify right side
    101,600.80x = 10,084,600,765.68
  5. Step 5: Solve for x
    x = 10,084,600,765.68/101,600.80
  6. Step 6: Final answer
    x = 99,257.10

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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.