Home / 121,812.08-168,104.13-68,103.14

Finding the Fourth Proportional to 121,812.08, 168,104.13 and 68,103.14

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Solution

The fourth proportional to 121,812.08, 168,104.13 and 68,103.14 is: 93,984.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,812.08 : 168,104.13 = 68,103.14 : x
  2. Step 2: Convert to fraction form
    121,812.08/168,104.13 = 68,103.14/x
  3. Step 3: Cross multiply
    121,812.08x = 168,104.13 × 68,103.14
  4. Step 4: Simplify right side
    121,812.08x = 11,448,419,099.97
  5. Step 5: Solve for x
    x = 11,448,419,099.97/121,812.08
  6. Step 6: Final answer
    x = 93,984.27

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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.