Home / 199,964.40-275,959.20-115,081.68

Finding the Fourth Proportional to 199,964.40, 275,959.20 and 115,081.68

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Solution

The fourth proportional to 199,964.40, 275,959.20 and 115,081.68 is: 158,817.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,964.40 : 275,959.20 = 115,081.68 : x
  2. Step 2: Convert to fraction form
    199,964.40/275,959.20 = 115,081.68/x
  3. Step 3: Cross multiply
    199,964.40x = 275,959.20 × 115,081.68
  4. Step 4: Simplify right side
    199,964.40x = 31,757,848,347.46
  5. Step 5: Solve for x
    x = 31,757,848,347.46/199,964.40
  6. Step 6: Final answer
    x = 158,817.51

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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.