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Finding the Fourth Proportional to 179,719.84, 269,649.60 and 74,512

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Solution

The fourth proportional to 179,719.84, 269,649.60 and 74,512 is: 111,796.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,719.84 : 269,649.60 = 74,512 : x
  2. Step 2: Convert to fraction form
    179,719.84/269,649.60 = 74,512/x
  3. Step 3: Cross multiply
    179,719.84x = 269,649.60 × 74,512
  4. Step 4: Simplify right side
    179,719.84x = 20,092,130,995.20
  5. Step 5: Solve for x
    x = 20,092,130,995.20/179,719.84
  6. Step 6: Final answer
    x = 111,796.96

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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.