Home / 107,831.52-161,550.18-78,175.80

Finding the Fourth Proportional to 107,831.52, 161,550.18 and 78,175.80

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Solution

The fourth proportional to 107,831.52, 161,550.18 and 78,175.80 is: 117,120.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,831.52 : 161,550.18 = 78,175.80 : x
  2. Step 2: Convert to fraction form
    107,831.52/161,550.18 = 78,175.80/x
  3. Step 3: Cross multiply
    107,831.52x = 161,550.18 × 78,175.80
  4. Step 4: Simplify right side
    107,831.52x = 12,629,314,561.64
  5. Step 5: Solve for x
    x = 12,629,314,561.64/107,831.52
  6. Step 6: Final answer
    x = 117,120.81

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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.