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Finding the Fourth Proportional to 140,242.60, 193,535.84 and 79,817.84

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Solution

The fourth proportional to 140,242.60, 193,535.84 and 79,817.84 is: 110,149.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,242.60 : 193,535.84 = 79,817.84 : x
  2. Step 2: Convert to fraction form
    140,242.60/193,535.84 = 79,817.84/x
  3. Step 3: Cross multiply
    140,242.60x = 193,535.84 × 79,817.84
  4. Step 4: Simplify right side
    140,242.60x = 15,447,612,711.39
  5. Step 5: Solve for x
    x = 15,447,612,711.39/140,242.60
  6. Step 6: Final answer
    x = 110,149.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.