Home / 87,982,523.20-131,973,784.80-81,605,231.20

Finding the Fourth Proportional to 87,982,523.20, 131,973,784.80 and 81,605,231.20

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Solution

The fourth proportional to 87,982,523.20, 131,973,784.80 and 81,605,231.20 is: 122,407,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,982,523.20 : 131,973,784.80 = 81,605,231.20 : x
  2. Step 2: Convert to fraction form
    87,982,523.20/131,973,784.80 = 81,605,231.20/x
  3. Step 3: Cross multiply
    87,982,523.20x = 131,973,784.80 × 81,605,231.20
  4. Step 4: Simplify right side
    87,982,523.20x = 10,769,751,220,943,046
  5. Step 5: Solve for x
    x = 10,769,751,220,943,046/87,982,523.20
  6. Step 6: Final answer
    x = 122,407,846.80

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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.