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Finding the Fourth Proportional to 121,242.67, 181,859.64 and 36,999.43

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Solution

The fourth proportional to 121,242.67, 181,859.64 and 36,999.43 is: 55,497.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,242.67 : 181,859.64 = 36,999.43 : x
  2. Step 2: Convert to fraction form
    121,242.67/181,859.64 = 36,999.43/x
  3. Step 3: Cross multiply
    121,242.67x = 181,859.64 × 36,999.43
  4. Step 4: Simplify right side
    121,242.67x = 6,728,703,020.01
  5. Step 5: Solve for x
    x = 6,728,703,020.01/121,242.67
  6. Step 6: Final answer
    x = 55,497.81

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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.