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Finding the Fourth Proportional to 166,517.80, 249,775.35 and 71,814.94

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Solution

The fourth proportional to 166,517.80, 249,775.35 and 71,814.94 is: 107,721.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,517.80 : 249,775.35 = 71,814.94 : x
  2. Step 2: Convert to fraction form
    166,517.80/249,775.35 = 71,814.94/x
  3. Step 3: Cross multiply
    166,517.80x = 249,775.35 × 71,814.94
  4. Step 4: Simplify right side
    166,517.80x = 17,937,601,773.73
  5. Step 5: Solve for x
    x = 17,937,601,773.73/166,517.80
  6. Step 6: Final answer
    x = 107,721.83

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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.