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Finding the Fourth Proportional to 121,141.88, 167,173.37 and 75,844.86

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Solution

The fourth proportional to 121,141.88, 167,173.37 and 75,844.86 is: 104,664.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,141.88 : 167,173.37 = 75,844.86 : x
  2. Step 2: Convert to fraction form
    121,141.88/167,173.37 = 75,844.86/x
  3. Step 3: Cross multiply
    121,141.88x = 167,173.37 × 75,844.86
  4. Step 4: Simplify right side
    121,141.88x = 12,679,240,121.67
  5. Step 5: Solve for x
    x = 12,679,240,121.67/121,141.88
  6. Step 6: Final answer
    x = 104,664.38

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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.