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Finding the Fourth Proportional to 140,178.60, 193,439.71 and 79,743.56

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Solution

The fourth proportional to 140,178.60, 193,439.71 and 79,743.56 is: 110,042.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,178.60 : 193,439.71 = 79,743.56 : x
  2. Step 2: Convert to fraction form
    140,178.60/193,439.71 = 79,743.56/x
  3. Step 3: Cross multiply
    140,178.60x = 193,439.71 × 79,743.56
  4. Step 4: Simplify right side
    140,178.60x = 15,425,570,253.25
  5. Step 5: Solve for x
    x = 15,425,570,253.25/140,178.60
  6. Step 6: Final answer
    x = 110,042.26

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1.5x scale

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.