Home / 87,371,331.40-131,056,997.10-81,986,062.60

Finding the Fourth Proportional to 87,371,331.40, 131,056,997.10 and 81,986,062.60

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Solution

The fourth proportional to 87,371,331.40, 131,056,997.10 and 81,986,062.60 is: 122,979,093.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,371,331.40 : 131,056,997.10 = 81,986,062.60 : x
  2. Step 2: Convert to fraction form
    87,371,331.40/131,056,997.10 = 81,986,062.60/x
  3. Step 3: Cross multiply
    87,371,331.40x = 131,056,997.10 × 81,986,062.60
  4. Step 4: Simplify right side
    87,371,331.40x = 10,744,847,168,408,618
  5. Step 5: Solve for x
    x = 10,744,847,168,408,618/87,371,331.40
  6. Step 6: Final answer
    x = 122,979,093.90

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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.