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Finding the Fourth Proportional to 179,418, 247,596.84 and 99,930

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Solution

The fourth proportional to 179,418, 247,596.84 and 99,930 is: 137,903.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,418 : 247,596.84 = 99,930 : x
  2. Step 2: Convert to fraction form
    179,418/247,596.84 = 99,930/x
  3. Step 3: Cross multiply
    179,418x = 247,596.84 × 99,930
  4. Step 4: Simplify right side
    179,418x = 24,742,352,221.20
  5. Step 5: Solve for x
    x = 24,742,352,221.20/179,418
  6. Step 6: Final answer
    x = 137,903.40

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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.