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Finding the Fourth Proportional to 159,675.94, 220,342.78 and 91,645.05

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Solution

The fourth proportional to 159,675.94, 220,342.78 and 91,645.05 is: 126,464.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,675.94 : 220,342.78 = 91,645.05 : x
  2. Step 2: Convert to fraction form
    159,675.94/220,342.78 = 91,645.05/x
  3. Step 3: Cross multiply
    159,675.94x = 220,342.78 × 91,645.05
  4. Step 4: Simplify right side
    159,675.94x = 20,193,326,031.08
  5. Step 5: Solve for x
    x = 20,193,326,031.08/159,675.94
  6. Step 6: Final answer
    x = 126,464.42

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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.