Home / 140,178.85-193,440.06-79,743.81

Finding the Fourth Proportional to 140,178.85, 193,440.06 and 79,743.81

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Solution

The fourth proportional to 140,178.85, 193,440.06 and 79,743.81 is: 110,042.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,178.85 : 193,440.06 = 79,743.81 : x
  2. Step 2: Convert to fraction form
    140,178.85/193,440.06 = 79,743.81/x
  3. Step 3: Cross multiply
    140,178.85x = 193,440.06 × 79,743.81
  4. Step 4: Simplify right side
    140,178.85x = 15,425,646,025.11
  5. Step 5: Solve for x
    x = 15,425,646,025.11/140,178.85
  6. Step 6: Final answer
    x = 110,042.61

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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.