Home / 170,930.20-256,395.30-82,356.70

Finding the Fourth Proportional to 170,930.20, 256,395.30 and 82,356.70

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Solution

The fourth proportional to 170,930.20, 256,395.30 and 82,356.70 is: 123,535.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,930.20 : 256,395.30 = 82,356.70 : x
  2. Step 2: Convert to fraction form
    170,930.20/256,395.30 = 82,356.70/x
  3. Step 3: Cross multiply
    170,930.20x = 256,395.30 × 82,356.70
  4. Step 4: Simplify right side
    170,930.20x = 21,115,870,803.51
  5. Step 5: Solve for x
    x = 21,115,870,803.51/170,930.20
  6. Step 6: Final answer
    x = 123,535.05

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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.