Home / 140,330.72-193,711.80-86,637.44

Finding the Fourth Proportional to 140,330.72, 193,711.80 and 86,637.44

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Solution

The fourth proportional to 140,330.72, 193,711.80 and 86,637.44 is: 119,593.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,330.72 : 193,711.80 = 86,637.44 : x
  2. Step 2: Convert to fraction form
    140,330.72/193,711.80 = 86,637.44/x
  3. Step 3: Cross multiply
    140,330.72x = 193,711.80 × 86,637.44
  4. Step 4: Simplify right side
    140,330.72x = 16,782,694,449.79
  5. Step 5: Solve for x
    x = 16,782,694,449.79/140,330.72
  6. Step 6: Final answer
    x = 119,593.87

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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.