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Finding the Fourth Proportional to 168,919.20, 253,378.80 and 166,294.80

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Solution

The fourth proportional to 168,919.20, 253,378.80 and 166,294.80 is: 249,442.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,919.20 : 253,378.80 = 166,294.80 : x
  2. Step 2: Convert to fraction form
    168,919.20/253,378.80 = 166,294.80/x
  3. Step 3: Cross multiply
    168,919.20x = 253,378.80 × 166,294.80
  4. Step 4: Simplify right side
    168,919.20x = 42,135,576,870.24
  5. Step 5: Solve for x
    x = 42,135,576,870.24/168,919.20
  6. Step 6: Final answer
    x = 249,442.20

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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.