Home / 166,387.31-249,589.25-81,076.54

Finding the Fourth Proportional to 166,387.31, 249,589.25 and 81,076.54

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Solution

The fourth proportional to 166,387.31, 249,589.25 and 81,076.54 is: 121,618.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,387.31 : 249,589.25 = 81,076.54 : x
  2. Step 2: Convert to fraction form
    166,387.31/249,589.25 = 81,076.54/x
  3. Step 3: Cross multiply
    166,387.31x = 249,589.25 × 81,076.54
  4. Step 4: Simplify right side
    166,387.31x = 20,235,832,397.86
  5. Step 5: Solve for x
    x = 20,235,832,397.86/166,387.31
  6. Step 6: Final answer
    x = 121,618.85

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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.