Home / 192,780.51-266,136.96-120,204.91

Finding the Fourth Proportional to 192,780.51, 266,136.96 and 120,204.91

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Solution

The fourth proportional to 192,780.51, 266,136.96 and 120,204.91 is: 165,945.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,780.51 : 266,136.96 = 120,204.91 : x
  2. Step 2: Convert to fraction form
    192,780.51/266,136.96 = 120,204.91/x
  3. Step 3: Cross multiply
    192,780.51x = 266,136.96 × 120,204.91
  4. Step 4: Simplify right side
    192,780.51x = 31,990,969,324.47
  5. Step 5: Solve for x
    x = 31,990,969,324.47/192,780.51
  6. Step 6: Final answer
    x = 165,945.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.