Home / 170,743.70-256,115.55-81,975.80

Finding the Fourth Proportional to 170,743.70, 256,115.55 and 81,975.80

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Solution

The fourth proportional to 170,743.70, 256,115.55 and 81,975.80 is: 122,963.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,743.70 : 256,115.55 = 81,975.80 : x
  2. Step 2: Convert to fraction form
    170,743.70/256,115.55 = 81,975.80/x
  3. Step 3: Cross multiply
    170,743.70x = 256,115.55 × 81,975.80
  4. Step 4: Simplify right side
    170,743.70x = 20,995,277,103.69
  5. Step 5: Solve for x
    x = 20,995,277,103.69/170,743.70
  6. Step 6: Final answer
    x = 122,963.70

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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.