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Finding the Fourth Proportional to 139,852, 192,989.01 and 79,414.66

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Solution

The fourth proportional to 139,852, 192,989.01 and 79,414.66 is: 109,588.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,852 : 192,989.01 = 79,414.66 : x
  2. Step 2: Convert to fraction form
    139,852/192,989.01 = 79,414.66/x
  3. Step 3: Cross multiply
    139,852x = 192,989.01 × 79,414.66
  4. Step 4: Simplify right side
    139,852x = 15,326,156,612.89
  5. Step 5: Solve for x
    x = 15,326,156,612.89/139,852
  6. Step 6: Final answer
    x = 109,588.40

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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.