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Finding the Fourth Proportional to 166,420.20, 249,662.70 and 71,650.20

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Solution

The fourth proportional to 166,420.20, 249,662.70 and 71,650.20 is: 107,489.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,420.20 : 249,662.70 = 71,650.20 : x
  2. Step 2: Convert to fraction form
    166,420.20/249,662.70 = 71,650.20/x
  3. Step 3: Cross multiply
    166,420.20x = 249,662.70 × 71,650.20
  4. Step 4: Simplify right side
    166,420.20x = 17,888,382,387.54
  5. Step 5: Solve for x
    x = 17,888,382,387.54/166,420.20
  6. Step 6: Final answer
    x = 107,489.25

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1.5x scale

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.