Home / 138,849.05-208,133.31-54,668.28

Finding the Fourth Proportional to 138,849.05, 208,133.31 and 54,668.28

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Solution

The fourth proportional to 138,849.05, 208,133.31 and 54,668.28 is: 81,947.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,849.05 : 208,133.31 = 54,668.28 : x
  2. Step 2: Convert to fraction form
    138,849.05/208,133.31 = 54,668.28/x
  3. Step 3: Cross multiply
    138,849.05x = 208,133.31 × 54,668.28
  4. Step 4: Simplify right side
    138,849.05x = 11,378,288,754.40
  5. Step 5: Solve for x
    x = 11,378,288,754.40/138,849.05
  6. Step 6: Final answer
    x = 81,947.19

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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.