Home / 252,666.38-378,872.78-84,127.34

Finding the Fourth Proportional to 252,666.38, 378,872.78 and 84,127.34

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Solution

The fourth proportional to 252,666.38, 378,872.78 and 84,127.34 is: 126,148.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,666.38 : 378,872.78 = 84,127.34 : x
  2. Step 2: Convert to fraction form
    252,666.38/378,872.78 = 84,127.34/x
  3. Step 3: Cross multiply
    252,666.38x = 378,872.78 × 84,127.34
  4. Step 4: Simplify right side
    252,666.38x = 31,873,559,179.81
  5. Step 5: Solve for x
    x = 31,873,559,179.81/252,666.38
  6. Step 6: Final answer
    x = 126,148.79

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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.