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Finding the Fourth Proportional to 168,735.55, 253,227.68 and 79,988.71

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Solution

The fourth proportional to 168,735.55, 253,227.68 and 79,988.71 is: 120,042.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,735.55 : 253,227.68 = 79,988.71 : x
  2. Step 2: Convert to fraction form
    168,735.55/253,227.68 = 79,988.71/x
  3. Step 3: Cross multiply
    168,735.55x = 253,227.68 × 79,988.71
  4. Step 4: Simplify right side
    168,735.55x = 20,255,355,459.49
  5. Step 5: Solve for x
    x = 20,255,355,459.49/168,735.55
  6. Step 6: Final answer
    x = 120,042.02

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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.