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Finding the Fourth Proportional to 121,669.63, 167,902.30 and 67,955.39

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Solution

The fourth proportional to 121,669.63, 167,902.30 and 67,955.39 is: 93,777.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,669.63 : 167,902.30 = 67,955.39 : x
  2. Step 2: Convert to fraction form
    121,669.63/167,902.30 = 67,955.39/x
  3. Step 3: Cross multiply
    121,669.63x = 167,902.30 × 67,955.39
  4. Step 4: Simplify right side
    121,669.63x = 11,409,866,153.46
  5. Step 5: Solve for x
    x = 11,409,866,153.46/121,669.63
  6. Step 6: Final answer
    x = 93,777.44

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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.