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Finding the Fourth Proportional to 139,992.71, 193,220.10 and 82,610.69

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Solution

The fourth proportional to 139,992.71, 193,220.10 and 82,610.69 is: 114,020.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,992.71 : 193,220.10 = 82,610.69 : x
  2. Step 2: Convert to fraction form
    139,992.71/193,220.10 = 82,610.69/x
  3. Step 3: Cross multiply
    139,992.71x = 193,220.10 × 82,610.69
  4. Step 4: Simplify right side
    139,992.71x = 15,962,044,816.77
  5. Step 5: Solve for x
    x = 15,962,044,816.77/139,992.71
  6. Step 6: Final answer
    x = 114,020.55

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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.