Home / 81,192,661.20-121,788,991.80-63,973,972.80

Finding the Fourth Proportional to 81,192,661.20, 121,788,991.80 and 63,973,972.80

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Solution

The fourth proportional to 81,192,661.20, 121,788,991.80 and 63,973,972.80 is: 95,960,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,192,661.20 : 121,788,991.80 = 63,973,972.80 : x
  2. Step 2: Convert to fraction form
    81,192,661.20/121,788,991.80 = 63,973,972.80/x
  3. Step 3: Cross multiply
    81,192,661.20x = 121,788,991.80 × 63,973,972.80
  4. Step 4: Simplify right side
    81,192,661.20x = 7,791,325,648,752,622
  5. Step 5: Solve for x
    x = 7,791,325,648,752,622/81,192,661.20
  6. Step 6: Final answer
    x = 95,960,959.20

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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.