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Finding the Fourth Proportional to 168,866.61, 253,330.61 and 80,119.28

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Solution

The fourth proportional to 168,866.61, 253,330.61 and 80,119.28 is: 120,193.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,866.61 : 253,330.61 = 80,119.28 : x
  2. Step 2: Convert to fraction form
    168,866.61/253,330.61 = 80,119.28/x
  3. Step 3: Cross multiply
    168,866.61x = 253,330.61 × 80,119.28
  4. Step 4: Simplify right side
    168,866.61x = 20,296,664,882.91
  5. Step 5: Solve for x
    x = 20,296,664,882.91/168,866.61
  6. Step 6: Final answer
    x = 120,193.48

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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.