Home / 254,631.38-381,988.38-86,162.09

Finding the Fourth Proportional to 254,631.38, 381,988.38 and 86,162.09

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Solution

The fourth proportional to 254,631.38, 381,988.38 and 86,162.09 is: 129,257.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,631.38 : 381,988.38 = 86,162.09 : x
  2. Step 2: Convert to fraction form
    254,631.38/381,988.38 = 86,162.09/x
  3. Step 3: Cross multiply
    254,631.38x = 381,988.38 × 86,162.09
  4. Step 4: Simplify right side
    254,631.38x = 32,912,917,176.51
  5. Step 5: Solve for x
    x = 32,912,917,176.51/254,631.38
  6. Step 6: Final answer
    x = 129,257.11

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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.