Home / 279,831.60-419,623.56-80,106.48

Finding the Fourth Proportional to 279,831.60, 419,623.56 and 80,106.48

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Solution

The fourth proportional to 279,831.60, 419,623.56 and 80,106.48 is: 120,124.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,831.60 : 419,623.56 = 80,106.48 : x
  2. Step 2: Convert to fraction form
    279,831.60/419,623.56 = 80,106.48/x
  3. Step 3: Cross multiply
    279,831.60x = 419,623.56 × 80,106.48
  4. Step 4: Simplify right side
    279,831.60x = 33,614,566,316.67
  5. Step 5: Solve for x
    x = 33,614,566,316.67/279,831.60
  6. Step 6: Final answer
    x = 120,124.27

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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.