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Finding the Fourth Proportional to 140,470.44, 210,372.74 and 80,531.48

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Solution

The fourth proportional to 140,470.44, 210,372.74 and 80,531.48 is: 120,606.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,470.44 : 210,372.74 = 80,531.48 : x
  2. Step 2: Convert to fraction form
    140,470.44/210,372.74 = 80,531.48/x
  3. Step 3: Cross multiply
    140,470.44x = 210,372.74 × 80,531.48
  4. Step 4: Simplify right side
    140,470.44x = 16,941,628,529.12
  5. Step 5: Solve for x
    x = 16,941,628,529.12/140,470.44
  6. Step 6: Final answer
    x = 120,606.36

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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.