Home / 187,831.20-281,746.80-109,147.80

Finding the Fourth Proportional to 187,831.20, 281,746.80 and 109,147.80

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Solution

The fourth proportional to 187,831.20, 281,746.80 and 109,147.80 is: 163,721.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,831.20 : 281,746.80 = 109,147.80 : x
  2. Step 2: Convert to fraction form
    187,831.20/281,746.80 = 109,147.80/x
  3. Step 3: Cross multiply
    187,831.20x = 281,746.80 × 109,147.80
  4. Step 4: Simplify right side
    187,831.20x = 30,752,043,377.04
  5. Step 5: Solve for x
    x = 30,752,043,377.04/187,831.20
  6. Step 6: Final answer
    x = 163,721.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.