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Finding the Fourth Proportional to 166,579.20, 249,989.76 and 65,391.84

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Solution

The fourth proportional to 166,579.20, 249,989.76 and 65,391.84 is: 98,135.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,579.20 : 249,989.76 = 65,391.84 : x
  2. Step 2: Convert to fraction form
    166,579.20/249,989.76 = 65,391.84/x
  3. Step 3: Cross multiply
    166,579.20x = 249,989.76 × 65,391.84
  4. Step 4: Simplify right side
    166,579.20x = 16,347,290,387.56
  5. Step 5: Solve for x
    x = 16,347,290,387.56/166,579.20
  6. Step 6: Final answer
    x = 98,135.24

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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.