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Finding the Fourth Proportional to 159,674.42, 220,340.62 and 91,643.50

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Solution

The fourth proportional to 159,674.42, 220,340.62 and 91,643.50 is: 126,462.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,674.42 : 220,340.62 = 91,643.50 : x
  2. Step 2: Convert to fraction form
    159,674.42/220,340.62 = 91,643.50/x
  3. Step 3: Cross multiply
    159,674.42x = 220,340.62 × 91,643.50
  4. Step 4: Simplify right side
    159,674.42x = 20,192,785,608.97
  5. Step 5: Solve for x
    x = 20,192,785,608.97/159,674.42
  6. Step 6: Final answer
    x = 126,462.24

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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.