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Finding the Fourth Proportional to 140,247.80, 210,473.19 and 54,871.28

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Solution

The fourth proportional to 140,247.80, 210,473.19 and 54,871.28 is: 82,346.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,247.80 : 210,473.19 = 54,871.28 : x
  2. Step 2: Convert to fraction form
    140,247.80/210,473.19 = 54,871.28/x
  3. Step 3: Cross multiply
    140,247.80x = 210,473.19 × 54,871.28
  4. Step 4: Simplify right side
    140,247.80x = 11,548,933,340.98
  5. Step 5: Solve for x
    x = 11,548,933,340.98/140,247.80
  6. Step 6: Final answer
    x = 82,346.63

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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.