Home / 170,868.76-256,357.97-82,128.70

Finding the Fourth Proportional to 170,868.76, 256,357.97 and 82,128.70

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Solution

The fourth proportional to 170,868.76, 256,357.97 and 82,128.70 is: 123,219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,868.76 : 256,357.97 = 82,128.70 : x
  2. Step 2: Convert to fraction form
    170,868.76/256,357.97 = 82,128.70/x
  3. Step 3: Cross multiply
    170,868.76x = 256,357.97 × 82,128.70
  4. Step 4: Simplify right side
    170,868.76x = 21,054,346,810.74
  5. Step 5: Solve for x
    x = 21,054,346,810.74/170,868.76
  6. Step 6: Final answer
    x = 123,219.40

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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.