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Finding the Fourth Proportional to 111,796.86, 154,343.43 and 74,122.14

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Solution

The fourth proportional to 111,796.86, 154,343.43 and 74,122.14 is: 102,330.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,796.86 : 154,343.43 = 74,122.14 : x
  2. Step 2: Convert to fraction form
    111,796.86/154,343.43 = 74,122.14/x
  3. Step 3: Cross multiply
    111,796.86x = 154,343.43 × 74,122.14
  4. Step 4: Simplify right side
    111,796.86x = 11,440,265,326.54
  5. Step 5: Solve for x
    x = 11,440,265,326.54/111,796.86
  6. Step 6: Final answer
    x = 102,330.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.