Home / 136,819.69-188,809.33-76,391.26

Finding the Fourth Proportional to 136,819.69, 188,809.33 and 76,391.26

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Solution

The fourth proportional to 136,819.69, 188,809.33 and 76,391.26 is: 105,418.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,819.69 : 188,809.33 = 76,391.26 : x
  2. Step 2: Convert to fraction form
    136,819.69/188,809.33 = 76,391.26/x
  3. Step 3: Cross multiply
    136,819.69x = 188,809.33 × 76,391.26
  4. Step 4: Simplify right side
    136,819.69x = 14,423,382,618.46
  5. Step 5: Solve for x
    x = 14,423,382,618.46/136,819.69
  6. Step 6: Final answer
    x = 105,418.91

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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.