Home / 87,100.16-120,194.80-49,373.60

Finding the Fourth Proportional to 87,100.16, 120,194.80 and 49,373.60

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Solution

The fourth proportional to 87,100.16, 120,194.80 and 49,373.60 is: 68,133.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,100.16 : 120,194.80 = 49,373.60 : x
  2. Step 2: Convert to fraction form
    87,100.16/120,194.80 = 49,373.60/x
  3. Step 3: Cross multiply
    87,100.16x = 120,194.80 × 49,373.60
  4. Step 4: Simplify right side
    87,100.16x = 5,934,449,977.28
  5. Step 5: Solve for x
    x = 5,934,449,977.28/87,100.16
  6. Step 6: Final answer
    x = 68,133.63

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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.