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Finding the Fourth Proportional to 166,385.20, 249,610.20 and 71,615.20

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Solution

The fourth proportional to 166,385.20, 249,610.20 and 71,615.20 is: 107,436.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,385.20 : 249,610.20 = 71,615.20 : x
  2. Step 2: Convert to fraction form
    166,385.20/249,610.20 = 71,615.20/x
  3. Step 3: Cross multiply
    166,385.20x = 249,610.20 × 71,615.20
  4. Step 4: Simplify right side
    166,385.20x = 17,875,884,395.04
  5. Step 5: Solve for x
    x = 17,875,884,395.04/166,385.20
  6. Step 6: Final answer
    x = 107,436.75

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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.