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Finding the Fourth Proportional to 140,156.16, 193,398.48 and 79,734.48

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Solution

The fourth proportional to 140,156.16, 193,398.48 and 79,734.48 is: 110,023.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,156.16 : 193,398.48 = 79,734.48 : x
  2. Step 2: Convert to fraction form
    140,156.16/193,398.48 = 79,734.48/x
  3. Step 3: Cross multiply
    140,156.16x = 193,398.48 × 79,734.48
  4. Step 4: Simplify right side
    140,156.16x = 15,420,527,235.59
  5. Step 5: Solve for x
    x = 15,420,527,235.59/140,156.16
  6. Step 6: Final answer
    x = 110,023.90

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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.