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Finding the Fourth Proportional to 168,732.55, 253,223.18 and 79,985.71

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Solution

The fourth proportional to 168,732.55, 253,223.18 and 79,985.71 is: 120,037.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,732.55 : 253,223.18 = 79,985.71 : x
  2. Step 2: Convert to fraction form
    168,732.55/253,223.18 = 79,985.71/x
  3. Step 3: Cross multiply
    168,732.55x = 253,223.18 × 79,985.71
  4. Step 4: Simplify right side
    168,732.55x = 20,254,236,057.30
  5. Step 5: Solve for x
    x = 20,254,236,057.30/168,732.55
  6. Step 6: Final answer
    x = 120,037.51

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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.