Home / 220,168,831.78-303,815,017.96-129,628,031.31

Finding the Fourth Proportional to 220,168,831.78, 303,815,017.96 and 129,628,031.31

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Solution

The fourth proportional to 220,168,831.78, 303,815,017.96 and 129,628,031.31 is: 178,876,103.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,168,831.78 : 303,815,017.96 = 129,628,031.31 : x
  2. Step 2: Convert to fraction form
    220,168,831.78/303,815,017.96 = 129,628,031.31/x
  3. Step 3: Cross multiply
    220,168,831.78x = 303,815,017.96 × 129,628,031.31
  4. Step 4: Simplify right side
    220,168,831.78x = 39,382,942,659,589,824
  5. Step 5: Solve for x
    x = 39,382,942,659,589,824/220,168,831.78
  6. Step 6: Final answer
    x = 178,876,103.13

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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.