Home / 140,086.91-193,319.01-79,657.56

Finding the Fourth Proportional to 140,086.91, 193,319.01 and 79,657.56

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Solution

The fourth proportional to 140,086.91, 193,319.01 and 79,657.56 is: 109,926.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,086.91 : 193,319.01 = 79,657.56 : x
  2. Step 2: Convert to fraction form
    140,086.91/193,319.01 = 79,657.56/x
  3. Step 3: Cross multiply
    140,086.91x = 193,319.01 × 79,657.56
  4. Step 4: Simplify right side
    140,086.91x = 15,399,320,638.22
  5. Step 5: Solve for x
    x = 15,399,320,638.22/140,086.91
  6. Step 6: Final answer
    x = 109,926.90

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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.