Home / 87,636.40-131,464.20-84,871.60

Finding the Fourth Proportional to 87,636.40, 131,464.20 and 84,871.60

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Solution

The fourth proportional to 87,636.40, 131,464.20 and 84,871.60 is: 127,316.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,636.40 : 131,464.20 = 84,871.60 : x
  2. Step 2: Convert to fraction form
    87,636.40/131,464.20 = 84,871.60/x
  3. Step 3: Cross multiply
    87,636.40x = 131,464.20 × 84,871.60
  4. Step 4: Simplify right side
    87,636.40x = 11,157,576,996.72
  5. Step 5: Solve for x
    x = 11,157,576,996.72/87,636.40
  6. Step 6: Final answer
    x = 127,316.70

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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.