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Finding the Fourth Proportional to 159,825.15, 220,596.39 and 91,881.54

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Solution

The fourth proportional to 159,825.15, 220,596.39 and 91,881.54 is: 126,818.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,825.15 : 220,596.39 = 91,881.54 : x
  2. Step 2: Convert to fraction form
    159,825.15/220,596.39 = 91,881.54/x
  3. Step 3: Cross multiply
    159,825.15x = 220,596.39 × 91,881.54
  4. Step 4: Simplify right side
    159,825.15x = 20,268,736,031.64
  5. Step 5: Solve for x
    x = 20,268,736,031.64/159,825.15
  6. Step 6: Final answer
    x = 126,818.19

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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.