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Finding the Fourth Proportional to 166,194.20, 249,121.20 and 81,824.60

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Solution

The fourth proportional to 166,194.20, 249,121.20 and 81,824.60 is: 122,653.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,194.20 : 249,121.20 = 81,824.60 : x
  2. Step 2: Convert to fraction form
    166,194.20/249,121.20 = 81,824.60/x
  3. Step 3: Cross multiply
    166,194.20x = 249,121.20 × 81,824.60
  4. Step 4: Simplify right side
    166,194.20x = 20,384,242,541.52
  5. Step 5: Solve for x
    x = 20,384,242,541.52/166,194.20
  6. Step 6: Final answer
    x = 122,653.15

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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.