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Finding the Fourth Proportional to 166,511.20, 249,766.80 and 124,520.80

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Solution

The fourth proportional to 166,511.20, 249,766.80 and 124,520.80 is: 186,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,511.20 : 249,766.80 = 124,520.80 : x
  2. Step 2: Convert to fraction form
    166,511.20/249,766.80 = 124,520.80/x
  3. Step 3: Cross multiply
    166,511.20x = 249,766.80 × 124,520.80
  4. Step 4: Simplify right side
    166,511.20x = 31,101,161,749.44
  5. Step 5: Solve for x
    x = 31,101,161,749.44/166,511.20
  6. Step 6: Final answer
    x = 186,781.20

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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.