Home / 170,772.10-256,231.05-81,979.90

Finding the Fourth Proportional to 170,772.10, 256,231.05 and 81,979.90

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Solution

The fourth proportional to 170,772.10, 256,231.05 and 81,979.90 is: 123,004.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,772.10 : 256,231.05 = 81,979.90 : x
  2. Step 2: Convert to fraction form
    170,772.10/256,231.05 = 81,979.90/x
  3. Step 3: Cross multiply
    170,772.10x = 256,231.05 × 81,979.90
  4. Step 4: Simplify right side
    170,772.10x = 21,005,795,855.90
  5. Step 5: Solve for x
    x = 21,005,795,855.90/170,772.10
  6. Step 6: Final answer
    x = 123,004.85

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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.