Home / 121,781.16-168,057.30-68,066.08

Finding the Fourth Proportional to 121,781.16, 168,057.30 and 68,066.08

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Solution

The fourth proportional to 121,781.16, 168,057.30 and 68,066.08 is: 93,930.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,781.16 : 168,057.30 = 68,066.08 : x
  2. Step 2: Convert to fraction form
    121,781.16/168,057.30 = 68,066.08/x
  3. Step 3: Cross multiply
    121,781.16x = 168,057.30 × 68,066.08
  4. Step 4: Simplify right side
    121,781.16x = 11,439,001,626.38
  5. Step 5: Solve for x
    x = 11,439,001,626.38/121,781.16
  6. Step 6: Final answer
    x = 93,930.80

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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.