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Finding the Fourth Proportional to 121,469.28, 167,616 and 67,750.08

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Solution

The fourth proportional to 121,469.28, 167,616 and 67,750.08 is: 93,488.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,469.28 : 167,616 = 67,750.08 : x
  2. Step 2: Convert to fraction form
    121,469.28/167,616 = 67,750.08/x
  3. Step 3: Cross multiply
    121,469.28x = 167,616 × 67,750.08
  4. Step 4: Simplify right side
    121,469.28x = 11,355,997,409.28
  5. Step 5: Solve for x
    x = 11,355,997,409.28/121,469.28
  6. Step 6: Final answer
    x = 93,488.64

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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.