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Finding the Fourth Proportional to 170,847.70, 256,271.55 and 82,079.80

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Solution

The fourth proportional to 170,847.70, 256,271.55 and 82,079.80 is: 123,119.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,847.70 : 256,271.55 = 82,079.80 : x
  2. Step 2: Convert to fraction form
    170,847.70/256,271.55 = 82,079.80/x
  3. Step 3: Cross multiply
    170,847.70x = 256,271.55 × 82,079.80
  4. Step 4: Simplify right side
    170,847.70x = 21,034,717,569.69
  5. Step 5: Solve for x
    x = 21,034,717,569.69/170,847.70
  6. Step 6: Final answer
    x = 123,119.70

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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.