Home / 87,157.82-120,298.30-53,194.40

Finding the Fourth Proportional to 87,157.82, 120,298.30 and 53,194.40

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Solution

The fourth proportional to 87,157.82, 120,298.30 and 53,194.40 is: 73,420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,157.82 : 120,298.30 = 53,194.40 : x
  2. Step 2: Convert to fraction form
    87,157.82/120,298.30 = 53,194.40/x
  3. Step 3: Cross multiply
    87,157.82x = 120,298.30 × 53,194.40
  4. Step 4: Simplify right side
    87,157.82x = 6,399,195,889.52
  5. Step 5: Solve for x
    x = 6,399,195,889.52/87,157.82
  6. Step 6: Final answer
    x = 73,420.79

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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.