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Finding the Fourth Proportional to 140,486.62, 193,871.74 and 79,233.62

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Solution

The fourth proportional to 140,486.62, 193,871.74 and 79,233.62 is: 109,342.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,486.62 : 193,871.74 = 79,233.62 : x
  2. Step 2: Convert to fraction form
    140,486.62/193,871.74 = 79,233.62/x
  3. Step 3: Cross multiply
    140,486.62x = 193,871.74 × 79,233.62
  4. Step 4: Simplify right side
    140,486.62x = 15,361,159,775.90
  5. Step 5: Solve for x
    x = 15,361,159,775.90/140,486.62
  6. Step 6: Final answer
    x = 109,342.51

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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.