Home / 121,842.48-168,131.16-68,120.04

Finding the Fourth Proportional to 121,842.48, 168,131.16 and 68,120.04

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Solution

The fourth proportional to 121,842.48, 168,131.16 and 68,120.04 is: 93,999.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,842.48 : 168,131.16 = 68,120.04 : x
  2. Step 2: Convert to fraction form
    121,842.48/168,131.16 = 68,120.04/x
  3. Step 3: Cross multiply
    121,842.48x = 168,131.16 × 68,120.04
  4. Step 4: Simplify right side
    121,842.48x = 11,453,101,344.45
  5. Step 5: Solve for x
    x = 11,453,101,344.45/121,842.48
  6. Step 6: Final answer
    x = 93,999.25

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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.