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Finding the Fourth Proportional to 159,572.70, 220,215.24 and 91,602.09

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Solution

The fourth proportional to 159,572.70, 220,215.24 and 91,602.09 is: 126,413.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,572.70 : 220,215.24 = 91,602.09 : x
  2. Step 2: Convert to fraction form
    159,572.70/220,215.24 = 91,602.09/x
  3. Step 3: Cross multiply
    159,572.70x = 220,215.24 × 91,602.09
  4. Step 4: Simplify right side
    159,572.70x = 20,172,176,233.85
  5. Step 5: Solve for x
    x = 20,172,176,233.85/159,572.70
  6. Step 6: Final answer
    x = 126,413.71

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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.