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Finding the Fourth Proportional to 140,244.96, 210,443.98 and 81,195.96

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Solution

The fourth proportional to 140,244.96, 210,443.98 and 81,195.96 is: 121,838.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,244.96 : 210,443.98 = 81,195.96 : x
  2. Step 2: Convert to fraction form
    140,244.96/210,443.98 = 81,195.96/x
  3. Step 3: Cross multiply
    140,244.96x = 210,443.98 × 81,195.96
  4. Step 4: Simplify right side
    140,244.96x = 17,087,200,982.32
  5. Step 5: Solve for x
    x = 17,087,200,982.32/140,244.96
  6. Step 6: Final answer
    x = 121,838.25

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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.