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Finding the Fourth Proportional to 166,418.40, 249,627.60 and 103,432.80

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Solution

The fourth proportional to 166,418.40, 249,627.60 and 103,432.80 is: 155,149.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,418.40 : 249,627.60 = 103,432.80 : x
  2. Step 2: Convert to fraction form
    166,418.40/249,627.60 = 103,432.80/x
  3. Step 3: Cross multiply
    166,418.40x = 249,627.60 × 103,432.80
  4. Step 4: Simplify right side
    166,418.40x = 25,819,681,625.28
  5. Step 5: Solve for x
    x = 25,819,681,625.28/166,418.40
  6. Step 6: Final answer
    x = 155,149.20

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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.