Home / 87,157.60-120,235.62-55,270.96

Finding the Fourth Proportional to 87,157.60, 120,235.62 and 55,270.96

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Solution

The fourth proportional to 87,157.60, 120,235.62 and 55,270.96 is: 76,247.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,157.60 : 120,235.62 = 55,270.96 : x
  2. Step 2: Convert to fraction form
    87,157.60/120,235.62 = 55,270.96/x
  3. Step 3: Cross multiply
    87,157.60x = 120,235.62 × 55,270.96
  4. Step 4: Simplify right side
    87,157.60x = 6,645,538,143.60
  5. Step 5: Solve for x
    x = 6,645,538,143.60/87,157.60
  6. Step 6: Final answer
    x = 76,247.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.