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Finding the Fourth Proportional to 107,750.61, 161,775 and 74,388.33

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Solution

The fourth proportional to 107,750.61, 161,775 and 74,388.33 is: 111,685.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,750.61 : 161,775 = 74,388.33 : x
  2. Step 2: Convert to fraction form
    107,750.61/161,775 = 74,388.33/x
  3. Step 3: Cross multiply
    107,750.61x = 161,775 × 74,388.33
  4. Step 4: Simplify right side
    107,750.61x = 12,034,172,085.75
  5. Step 5: Solve for x
    x = 12,034,172,085.75/107,750.61
  6. Step 6: Final answer
    x = 111,685.42

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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.