Home / 121,861.15-168,172.97-68,146.04

Finding the Fourth Proportional to 121,861.15, 168,172.97 and 68,146.04

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Solution

The fourth proportional to 121,861.15, 168,172.97 and 68,146.04 is: 94,044.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,861.15 : 168,172.97 = 68,146.04 : x
  2. Step 2: Convert to fraction form
    121,861.15/168,172.97 = 68,146.04/x
  3. Step 3: Cross multiply
    121,861.15x = 168,172.97 × 68,146.04
  4. Step 4: Simplify right side
    121,861.15x = 11,460,321,940.54
  5. Step 5: Solve for x
    x = 11,460,321,940.54/121,861.15
  6. Step 6: Final answer
    x = 94,044.10

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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.