Home / 199,985.60-275,980-109,341.92

Finding the Fourth Proportional to 199,985.60, 275,980 and 109,341.92

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Solution

The fourth proportional to 199,985.60, 275,980 and 109,341.92 is: 150,891.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,985.60 : 275,980 = 109,341.92 : x
  2. Step 2: Convert to fraction form
    199,985.60/275,980 = 109,341.92/x
  3. Step 3: Cross multiply
    199,985.60x = 275,980 × 109,341.92
  4. Step 4: Simplify right side
    199,985.60x = 30,176,183,081.60
  5. Step 5: Solve for x
    x = 30,176,183,081.60/199,985.60
  6. Step 6: Final answer
    x = 150,891.78

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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.