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Finding the Fourth Proportional to 166,021.20, 249,064.20 and 71,251.20

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Solution

The fourth proportional to 166,021.20, 249,064.20 and 71,251.20 is: 106,890.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,021.20 : 249,064.20 = 71,251.20 : x
  2. Step 2: Convert to fraction form
    166,021.20/249,064.20 = 71,251.20/x
  3. Step 3: Cross multiply
    166,021.20x = 249,064.20 × 71,251.20
  4. Step 4: Simplify right side
    166,021.20x = 17,746,123,127.04
  5. Step 5: Solve for x
    x = 17,746,123,127.04/166,021.20
  6. Step 6: Final answer
    x = 106,890.71

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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.