Home / 136,920.14-188,947.71-76,491.65

Finding the Fourth Proportional to 136,920.14, 188,947.71 and 76,491.65

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Solution

The fourth proportional to 136,920.14, 188,947.71 and 76,491.65 is: 105,557.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,920.14 : 188,947.71 = 76,491.65 : x
  2. Step 2: Convert to fraction form
    136,920.14/188,947.71 = 76,491.65/x
  3. Step 3: Cross multiply
    136,920.14x = 188,947.71 × 76,491.65
  4. Step 4: Simplify right side
    136,920.14x = 14,452,922,101.62
  5. Step 5: Solve for x
    x = 14,452,922,101.62/136,920.14
  6. Step 6: Final answer
    x = 105,557.31

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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.