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Finding the Fourth Proportional to 159,793.69, 220,507.90 and 91,762.80

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Solution

The fourth proportional to 159,793.69, 220,507.90 and 91,762.80 is: 126,628.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,793.69 : 220,507.90 = 91,762.80 : x
  2. Step 2: Convert to fraction form
    159,793.69/220,507.90 = 91,762.80/x
  3. Step 3: Cross multiply
    159,793.69x = 220,507.90 × 91,762.80
  4. Step 4: Simplify right side
    159,793.69x = 20,234,422,326.12
  5. Step 5: Solve for x
    x = 20,234,422,326.12/159,793.69
  6. Step 6: Final answer
    x = 126,628.42

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1.5x scale

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.