Home / 128,304,388.80-192,511,879.20-74,497,694.40

Finding the Fourth Proportional to 128,304,388.80, 192,511,879.20 and 74,497,694.40

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Solution

The fourth proportional to 128,304,388.80, 192,511,879.20 and 74,497,694.40 is: 111,778,648.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,388.80 : 192,511,879.20 = 74,497,694.40 : x
  2. Step 2: Convert to fraction form
    128,304,388.80/192,511,879.20 = 74,497,694.40/x
  3. Step 3: Cross multiply
    128,304,388.80x = 192,511,879.20 × 74,497,694.40
  4. Step 4: Simplify right side
    128,304,388.80x = 14,341,691,145,011,316
  5. Step 5: Solve for x
    x = 14,341,691,145,011,316/128,304,388.80
  6. Step 6: Final answer
    x = 111,778,648.25

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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.