Home / 220,168,831.65-303,815,017.78-129,628,031.18

Finding the Fourth Proportional to 220,168,831.65, 303,815,017.78 and 129,628,031.18

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Solution

The fourth proportional to 220,168,831.65, 303,815,017.78 and 129,628,031.18 is: 178,876,102.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,168,831.65 : 303,815,017.78 = 129,628,031.18 : x
  2. Step 2: Convert to fraction form
    220,168,831.65/303,815,017.78 = 129,628,031.18/x
  3. Step 3: Cross multiply
    220,168,831.65x = 303,815,017.78 × 129,628,031.18
  4. Step 4: Simplify right side
    220,168,831.65x = 39,382,942,595,570,872
  5. Step 5: Solve for x
    x = 39,382,942,595,570,872/220,168,831.65
  6. Step 6: Final answer
    x = 178,876,102.95

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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.