Home / 170,939.13-256,439.69-85,594.50

Finding the Fourth Proportional to 170,939.13, 256,439.69 and 85,594.50

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Solution

The fourth proportional to 170,939.13, 256,439.69 and 85,594.50 is: 128,407.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,939.13 : 256,439.69 = 85,594.50 : x
  2. Step 2: Convert to fraction form
    170,939.13/256,439.69 = 85,594.50/x
  3. Step 3: Cross multiply
    170,939.13x = 256,439.69 × 85,594.50
  4. Step 4: Simplify right side
    170,939.13x = 21,949,826,617.73
  5. Step 5: Solve for x
    x = 21,949,826,617.73/170,939.13
  6. Step 6: Final answer
    x = 128,407.27

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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.