Home / 170,715.80-256,073.70-90,999.65

Finding the Fourth Proportional to 170,715.80, 256,073.70 and 90,999.65

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Solution

The fourth proportional to 170,715.80, 256,073.70 and 90,999.65 is: 136,499.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,715.80 : 256,073.70 = 90,999.65 : x
  2. Step 2: Convert to fraction form
    170,715.80/256,073.70 = 90,999.65/x
  3. Step 3: Cross multiply
    170,715.80x = 256,073.70 × 90,999.65
  4. Step 4: Simplify right side
    170,715.80x = 23,302,617,074.21
  5. Step 5: Solve for x
    x = 23,302,617,074.21/170,715.80
  6. Step 6: Final answer
    x = 136,499.48

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Similar ratio
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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.