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Finding the Fourth Proportional to 121,610.17, 167,816.64 and 67,893.94

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Solution

The fourth proportional to 121,610.17, 167,816.64 and 67,893.94 is: 93,690.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,610.17 : 167,816.64 = 67,893.94 : x
  2. Step 2: Convert to fraction form
    121,610.17/167,816.64 = 67,893.94/x
  3. Step 3: Cross multiply
    121,610.17x = 167,816.64 × 67,893.94
  4. Step 4: Simplify right side
    121,610.17x = 11,393,732,887.16
  5. Step 5: Solve for x
    x = 11,393,732,887.16/121,610.17
  6. Step 6: Final answer
    x = 93,690.63

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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.