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Finding the Fourth Proportional to 166,081.20, 249,121.80 and 156,895.80

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Solution

The fourth proportional to 166,081.20, 249,121.80 and 156,895.80 is: 235,343.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,081.20 : 249,121.80 = 156,895.80 : x
  2. Step 2: Convert to fraction form
    166,081.20/249,121.80 = 156,895.80/x
  3. Step 3: Cross multiply
    166,081.20x = 249,121.80 × 156,895.80
  4. Step 4: Simplify right side
    166,081.20x = 39,086,164,108.44
  5. Step 5: Solve for x
    x = 39,086,164,108.44/166,081.20
  6. Step 6: Final answer
    x = 235,343.70

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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.