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Finding the Fourth Proportional to 168,966.40, 253,480.20 and 80,219.20

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Solution

The fourth proportional to 168,966.40, 253,480.20 and 80,219.20 is: 120,343.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,966.40 : 253,480.20 = 80,219.20 : x
  2. Step 2: Convert to fraction form
    168,966.40/253,480.20 = 80,219.20/x
  3. Step 3: Cross multiply
    168,966.40x = 253,480.20 × 80,219.20
  4. Step 4: Simplify right side
    168,966.40x = 20,333,978,859.84
  5. Step 5: Solve for x
    x = 20,333,978,859.84/168,966.40
  6. Step 6: Final answer
    x = 120,343.33

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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.