Home / 199,842.32-275,265-139,304.72

Finding the Fourth Proportional to 199,842.32, 275,265 and 139,304.72

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Solution

The fourth proportional to 199,842.32, 275,265 and 139,304.72 is: 191,879.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,842.32 : 275,265 = 139,304.72 : x
  2. Step 2: Convert to fraction form
    199,842.32/275,265 = 139,304.72/x
  3. Step 3: Cross multiply
    199,842.32x = 275,265 × 139,304.72
  4. Step 4: Simplify right side
    199,842.32x = 38,345,713,750.80
  5. Step 5: Solve for x
    x = 38,345,713,750.80/199,842.32
  6. Step 6: Final answer
    x = 191,879.85

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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.