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Finding the Fourth Proportional to 179,420, 247,599.60 and 99,932

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Solution

The fourth proportional to 179,420, 247,599.60 and 99,932 is: 137,906.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,420 : 247,599.60 = 99,932 : x
  2. Step 2: Convert to fraction form
    179,420/247,599.60 = 99,932/x
  3. Step 3: Cross multiply
    179,420x = 247,599.60 × 99,932
  4. Step 4: Simplify right side
    179,420x = 24,743,123,227.20
  5. Step 5: Solve for x
    x = 24,743,123,227.20/179,420
  6. Step 6: Final answer
    x = 137,906.16

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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.