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Finding the Fourth Proportional to 140,348.70, 193,682.07 and 79,923.78

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Solution

The fourth proportional to 140,348.70, 193,682.07 and 79,923.78 is: 110,295.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,348.70 : 193,682.07 = 79,923.78 : x
  2. Step 2: Convert to fraction form
    140,348.70/193,682.07 = 79,923.78/x
  3. Step 3: Cross multiply
    140,348.70x = 193,682.07 × 79,923.78
  4. Step 4: Simplify right side
    140,348.70x = 15,479,803,152.62
  5. Step 5: Solve for x
    x = 15,479,803,152.62/140,348.70
  6. Step 6: Final answer
    x = 110,295.31

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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.