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Finding the Fourth Proportional to 163,578.42, 225,741.78 and 99,951.30

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Solution

The fourth proportional to 163,578.42, 225,741.78 and 99,951.30 is: 137,934.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,578.42 : 225,741.78 = 99,951.30 : x
  2. Step 2: Convert to fraction form
    163,578.42/225,741.78 = 99,951.30/x
  3. Step 3: Cross multiply
    163,578.42x = 225,741.78 × 99,951.30
  4. Step 4: Simplify right side
    163,578.42x = 22,563,184,375.31
  5. Step 5: Solve for x
    x = 22,563,184,375.31/163,578.42
  6. Step 6: Final answer
    x = 137,934.97

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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.