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Finding the Fourth Proportional to 121,043.60, 181,541.10 and 57,863.60

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Solution

The fourth proportional to 121,043.60, 181,541.10 and 57,863.60 is: 86,783.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,043.60 : 181,541.10 = 57,863.60 : x
  2. Step 2: Convert to fraction form
    121,043.60/181,541.10 = 57,863.60/x
  3. Step 3: Cross multiply
    121,043.60x = 181,541.10 × 57,863.60
  4. Step 4: Simplify right side
    121,043.60x = 10,504,621,593.96
  5. Step 5: Solve for x
    x = 10,504,621,593.96/121,043.60
  6. Step 6: Final answer
    x = 86,783.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.