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Finding the Fourth Proportional to 159,806.69, 220,525.74 and 91,775.70

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Solution

The fourth proportional to 159,806.69, 220,525.74 and 91,775.70 is: 126,646.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,806.69 : 220,525.74 = 91,775.70 : x
  2. Step 2: Convert to fraction form
    159,806.69/220,525.74 = 91,775.70/x
  3. Step 3: Cross multiply
    159,806.69x = 220,525.74 × 91,775.70
  4. Step 4: Simplify right side
    159,806.69x = 20,238,904,156.52
  5. Step 5: Solve for x
    x = 20,238,904,156.52/159,806.69
  6. Step 6: Final answer
    x = 126,646.16

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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.