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Finding the Fourth Proportional to 159,808.68, 220,528.50 and 91,777.70

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Solution

The fourth proportional to 159,808.68, 220,528.50 and 91,777.70 is: 126,648.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,808.68 : 220,528.50 = 91,777.70 : x
  2. Step 2: Convert to fraction form
    159,808.68/220,528.50 = 91,777.70/x
  3. Step 3: Cross multiply
    159,808.68x = 220,528.50 × 91,777.70
  4. Step 4: Simplify right side
    159,808.68x = 20,239,598,514.45
  5. Step 5: Solve for x
    x = 20,239,598,514.45/159,808.68
  6. Step 6: Final answer
    x = 126,648.93

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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.