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Finding the Fourth Proportional to 166,272.70, 249,238.95 and 81,903.10

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Solution

The fourth proportional to 166,272.70, 249,238.95 and 81,903.10 is: 122,770.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,272.70 : 249,238.95 = 81,903.10 : x
  2. Step 2: Convert to fraction form
    166,272.70/249,238.95 = 81,903.10/x
  3. Step 3: Cross multiply
    166,272.70x = 249,238.95 × 81,903.10
  4. Step 4: Simplify right side
    166,272.70x = 20,413,442,645.75
  5. Step 5: Solve for x
    x = 20,413,442,645.75/166,272.70
  6. Step 6: Final answer
    x = 122,770.86

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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.