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Finding the Fourth Proportional to 131,820.81, 198,292.49 and 119,489.74

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Solution

The fourth proportional to 131,820.81, 198,292.49 and 119,489.74 is: 179,743.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,820.81 : 198,292.49 = 119,489.74 : x
  2. Step 2: Convert to fraction form
    131,820.81/198,292.49 = 119,489.74/x
  3. Step 3: Cross multiply
    131,820.81x = 198,292.49 × 119,489.74
  4. Step 4: Simplify right side
    131,820.81x = 23,693,918,658.79
  5. Step 5: Solve for x
    x = 23,693,918,658.79/131,820.81
  6. Step 6: Final answer
    x = 179,743.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.