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Finding the Fourth Proportional to 151,648.67, 209,267.43 and 91,207.70

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Solution

The fourth proportional to 151,648.67, 209,267.43 and 91,207.70 is: 125,861.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,648.67 : 209,267.43 = 91,207.70 : x
  2. Step 2: Convert to fraction form
    151,648.67/209,267.43 = 91,207.70/x
  3. Step 3: Cross multiply
    151,648.67x = 209,267.43 × 91,207.70
  4. Step 4: Simplify right side
    151,648.67x = 19,086,800,975.21
  5. Step 5: Solve for x
    x = 19,086,800,975.21/151,648.67
  6. Step 6: Final answer
    x = 125,861.97

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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.