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Finding the Fourth Proportional to 121,412.49, 167,549.31 and 67,696.29

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Solution

The fourth proportional to 121,412.49, 167,549.31 and 67,696.29 is: 93,420.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,412.49 : 167,549.31 = 67,696.29 : x
  2. Step 2: Convert to fraction form
    121,412.49/167,549.31 = 67,696.29/x
  3. Step 3: Cross multiply
    121,412.49x = 167,549.31 × 67,696.29
  4. Step 4: Simplify right side
    121,412.49x = 11,342,466,679.06
  5. Step 5: Solve for x
    x = 11,342,466,679.06/121,412.49
  6. Step 6: Final answer
    x = 93,420.92

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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.