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Finding the Fourth Proportional to 101,674.80, 152,512.20 and 66,245.40

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Solution

The fourth proportional to 101,674.80, 152,512.20 and 66,245.40 is: 99,368.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,674.80 : 152,512.20 = 66,245.40 : x
  2. Step 2: Convert to fraction form
    101,674.80/152,512.20 = 66,245.40/x
  3. Step 3: Cross multiply
    101,674.80x = 152,512.20 × 66,245.40
  4. Step 4: Simplify right side
    101,674.80x = 10,103,231,693.88
  5. Step 5: Solve for x
    x = 10,103,231,693.88/101,674.80
  6. Step 6: Final answer
    x = 99,368.10

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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.