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Finding the Fourth Proportional to 121,674, 167,908.37 and 67,959.80

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Solution

The fourth proportional to 121,674, 167,908.37 and 67,959.80 is: 93,783.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,674 : 167,908.37 = 67,959.80 : x
  2. Step 2: Convert to fraction form
    121,674/167,908.37 = 67,959.80/x
  3. Step 3: Cross multiply
    121,674x = 167,908.37 × 67,959.80
  4. Step 4: Simplify right side
    121,674x = 11,411,019,243.53
  5. Step 5: Solve for x
    x = 11,411,019,243.53/121,674
  6. Step 6: Final answer
    x = 93,783.55

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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.