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Finding the Fourth Proportional to 139,750.28, 192,845.65 and 79,322.15

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Solution

The fourth proportional to 139,750.28, 192,845.65 and 79,322.15 is: 109,459.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,750.28 : 192,845.65 = 79,322.15 : x
  2. Step 2: Convert to fraction form
    139,750.28/192,845.65 = 79,322.15/x
  3. Step 3: Cross multiply
    139,750.28x = 192,845.65 × 79,322.15
  4. Step 4: Simplify right side
    139,750.28x = 15,296,931,576.15
  5. Step 5: Solve for x
    x = 15,296,931,576.15/139,750.28
  6. Step 6: Final answer
    x = 109,459.04

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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.