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Finding the Fourth Proportional to 121,471.01, 181,832.69 and 79,260.29

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Solution

The fourth proportional to 121,471.01, 181,832.69 and 79,260.29 is: 118,646.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,471.01 : 181,832.69 = 79,260.29 : x
  2. Step 2: Convert to fraction form
    121,471.01/181,832.69 = 79,260.29/x
  3. Step 3: Cross multiply
    121,471.01x = 181,832.69 × 79,260.29
  4. Step 4: Simplify right side
    121,471.01x = 14,412,110,435.42
  5. Step 5: Solve for x
    x = 14,412,110,435.42/121,471.01
  6. Step 6: Final answer
    x = 118,646.51

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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.