Home / 121,939.56-168,292.02-74,190.04

Finding the Fourth Proportional to 121,939.56, 168,292.02 and 74,190.04

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Solution

The fourth proportional to 121,939.56, 168,292.02 and 74,190.04 is: 102,391.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,939.56 : 168,292.02 = 74,190.04 : x
  2. Step 2: Convert to fraction form
    121,939.56/168,292.02 = 74,190.04/x
  3. Step 3: Cross multiply
    121,939.56x = 168,292.02 × 74,190.04
  4. Step 4: Simplify right side
    121,939.56x = 12,485,591,695.48
  5. Step 5: Solve for x
    x = 12,485,591,695.48/121,939.56
  6. Step 6: Final answer
    x = 102,391.64

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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.