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Finding the Fourth Proportional to 121,496.34, 167,679.54 and 71,195.34

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Solution

The fourth proportional to 121,496.34, 167,679.54 and 71,195.34 is: 98,258.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,496.34 : 167,679.54 = 71,195.34 : x
  2. Step 2: Convert to fraction form
    121,496.34/167,679.54 = 71,195.34/x
  3. Step 3: Cross multiply
    121,496.34x = 167,679.54 × 71,195.34
  4. Step 4: Simplify right side
    121,496.34x = 11,938,001,861.34
  5. Step 5: Solve for x
    x = 11,938,001,861.34/121,496.34
  6. Step 6: Final answer
    x = 98,258.12

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1.5x scale

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.