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Finding the Fourth Proportional to 121,598.82, 167,805.27 and 67,880.43

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Solution

The fourth proportional to 121,598.82, 167,805.27 and 67,880.43 is: 93,674.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,598.82 : 167,805.27 = 67,880.43 : x
  2. Step 2: Convert to fraction form
    121,598.82/167,805.27 = 67,880.43/x
  3. Step 3: Cross multiply
    121,598.82x = 167,805.27 × 67,880.43
  4. Step 4: Simplify right side
    121,598.82x = 11,390,693,883.87
  5. Step 5: Solve for x
    x = 11,390,693,883.87/121,598.82
  6. Step 6: Final answer
    x = 93,674.38

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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.