Home / 128,304,850.80-192,079,362.60-120,830,559.60

Finding the Fourth Proportional to 128,304,850.80, 192,079,362.60 and 120,830,559.60

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Solution

The fourth proportional to 128,304,850.80, 192,079,362.60 and 120,830,559.60 is: 180,889,940.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,850.80 : 192,079,362.60 = 120,830,559.60 : x
  2. Step 2: Convert to fraction form
    128,304,850.80/192,079,362.60 = 120,830,559.60/x
  3. Step 3: Cross multiply
    128,304,850.80x = 192,079,362.60 × 120,830,559.60
  4. Step 4: Simplify right side
    128,304,850.80x = 23,209,056,870,569,308
  5. Step 5: Solve for x
    x = 23,209,056,870,569,308/128,304,850.80
  6. Step 6: Final answer
    x = 180,889,940.84

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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.