Home / 136,917.39-188,943.92-76,488.90

Finding the Fourth Proportional to 136,917.39, 188,943.92 and 76,488.90

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Solution

The fourth proportional to 136,917.39, 188,943.92 and 76,488.90 is: 105,553.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,917.39 : 188,943.92 = 76,488.90 : x
  2. Step 2: Convert to fraction form
    136,917.39/188,943.92 = 76,488.90/x
  3. Step 3: Cross multiply
    136,917.39x = 188,943.92 × 76,488.90
  4. Step 4: Simplify right side
    136,917.39x = 14,452,112,220.04
  5. Step 5: Solve for x
    x = 14,452,112,220.04/136,917.39
  6. Step 6: Final answer
    x = 105,553.52

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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.