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Finding the Fourth Proportional to 139,926.70, 193,098.90 and 79,497.44

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Solution

The fourth proportional to 139,926.70, 193,098.90 and 79,497.44 is: 109,706.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,926.70 : 193,098.90 = 79,497.44 : x
  2. Step 2: Convert to fraction form
    139,926.70/193,098.90 = 79,497.44/x
  3. Step 3: Cross multiply
    139,926.70x = 193,098.90 × 79,497.44
  4. Step 4: Simplify right side
    139,926.70x = 15,350,868,273.56
  5. Step 5: Solve for x
    x = 15,350,868,273.56/139,926.70
  6. Step 6: Final answer
    x = 109,706.50

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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.