Home / 139,548.60-192,571.20-79,123.32

Finding the Fourth Proportional to 139,548.60, 192,571.20 and 79,123.32

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Solution

The fourth proportional to 139,548.60, 192,571.20 and 79,123.32 is: 109,186.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,548.60 : 192,571.20 = 79,123.32 : x
  2. Step 2: Convert to fraction form
    139,548.60/192,571.20 = 79,123.32/x
  3. Step 3: Cross multiply
    139,548.60x = 192,571.20 × 79,123.32
  4. Step 4: Simplify right side
    139,548.60x = 15,236,872,680.38
  5. Step 5: Solve for x
    x = 15,236,872,680.38/139,548.60
  6. Step 6: Final answer
    x = 109,186.85

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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.