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Finding the Fourth Proportional to 121,534.74, 182,039.67 and 118,560.42

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Solution

The fourth proportional to 121,534.74, 182,039.67 and 118,560.42 is: 177,584.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,534.74 : 182,039.67 = 118,560.42 : x
  2. Step 2: Convert to fraction form
    121,534.74/182,039.67 = 118,560.42/x
  3. Step 3: Cross multiply
    121,534.74x = 182,039.67 × 118,560.42
  4. Step 4: Simplify right side
    121,534.74x = 21,582,699,731.86
  5. Step 5: Solve for x
    x = 21,582,699,731.86/121,534.74
  6. Step 6: Final answer
    x = 177,584.61

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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.