Home / 128,304,887.80-192,079,418.10-120,830,596.60

Finding the Fourth Proportional to 128,304,887.80, 192,079,418.10 and 120,830,596.60

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Solution

The fourth proportional to 128,304,887.80, 192,079,418.10 and 120,830,596.60 is: 180,889,996.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,887.80 : 192,079,418.10 = 120,830,596.60 : x
  2. Step 2: Convert to fraction form
    128,304,887.80/192,079,418.10 = 120,830,596.60/x
  3. Step 3: Cross multiply
    128,304,887.80x = 192,079,418.10 × 120,830,596.60
  4. Step 4: Simplify right side
    128,304,887.80x = 23,209,070,683,603,836
  5. Step 5: Solve for x
    x = 23,209,070,683,603,836/128,304,887.80
  6. Step 6: Final answer
    x = 180,889,996.33

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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.