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Finding the Fourth Proportional to 252,610.72, 378,873.01 and 84,111.94

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Solution

The fourth proportional to 252,610.72, 378,873.01 and 84,111.94 is: 126,153.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,610.72 : 378,873.01 = 84,111.94 : x
  2. Step 2: Convert to fraction form
    252,610.72/378,873.01 = 84,111.94/x
  3. Step 3: Cross multiply
    252,610.72x = 378,873.01 × 84,111.94
  4. Step 4: Simplify right side
    252,610.72x = 31,867,742,332.31
  5. Step 5: Solve for x
    x = 31,867,742,332.31/252,610.72
  6. Step 6: Final answer
    x = 126,153.56

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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.