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Finding the Fourth Proportional to 166,382.60, 249,386.49 and 81,963.90

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Solution

The fourth proportional to 166,382.60, 249,386.49 and 81,963.90 is: 122,853.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,382.60 : 249,386.49 = 81,963.90 : x
  2. Step 2: Convert to fraction form
    166,382.60/249,386.49 = 81,963.90/x
  3. Step 3: Cross multiply
    166,382.60x = 249,386.49 × 81,963.90
  4. Step 4: Simplify right side
    166,382.60x = 20,440,689,327.71
  5. Step 5: Solve for x
    x = 20,440,689,327.71/166,382.60
  6. Step 6: Final answer
    x = 122,853.53

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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.