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Finding the Fourth Proportional to 170,820.20, 256,230.30 and 82,052.30

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Solution

The fourth proportional to 170,820.20, 256,230.30 and 82,052.30 is: 123,078.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,820.20 : 256,230.30 = 82,052.30 : x
  2. Step 2: Convert to fraction form
    170,820.20/256,230.30 = 82,052.30/x
  3. Step 3: Cross multiply
    170,820.20x = 256,230.30 × 82,052.30
  4. Step 4: Simplify right side
    170,820.20x = 21,024,285,444.69
  5. Step 5: Solve for x
    x = 21,024,285,444.69/170,820.20
  6. Step 6: Final answer
    x = 123,078.45

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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.