Home / 117,831.20-176,314.80-86,727.20

Finding the Fourth Proportional to 117,831.20, 176,314.80 and 86,727.20

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Solution

The fourth proportional to 117,831.20, 176,314.80 and 86,727.20 is: 129,772.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,831.20 : 176,314.80 = 86,727.20 : x
  2. Step 2: Convert to fraction form
    117,831.20/176,314.80 = 86,727.20/x
  3. Step 3: Cross multiply
    117,831.20x = 176,314.80 × 86,727.20
  4. Step 4: Simplify right side
    117,831.20x = 15,291,288,922.56
  5. Step 5: Solve for x
    x = 15,291,288,922.56/117,831.20
  6. Step 6: Final answer
    x = 129,772.84

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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.