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Finding the Fourth Proportional to 168,929.74, 253,043.61 and 80,253.10

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Solution

The fourth proportional to 168,929.74, 253,043.61 and 80,253.10 is: 120,212.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,929.74 : 253,043.61 = 80,253.10 : x
  2. Step 2: Convert to fraction form
    168,929.74/253,043.61 = 80,253.10/x
  3. Step 3: Cross multiply
    168,929.74x = 253,043.61 × 80,253.10
  4. Step 4: Simplify right side
    168,929.74x = 20,307,534,137.69
  5. Step 5: Solve for x
    x = 20,307,534,137.69/168,929.74
  6. Step 6: Final answer
    x = 120,212.90

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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.