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Finding the Fourth Proportional to 225,009.86, 337,515.11 and 91,890.12

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Solution

The fourth proportional to 225,009.86, 337,515.11 and 91,890.12 is: 137,835.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,009.86 : 337,515.11 = 91,890.12 : x
  2. Step 2: Convert to fraction form
    225,009.86/337,515.11 = 91,890.12/x
  3. Step 3: Cross multiply
    225,009.86x = 337,515.11 × 91,890.12
  4. Step 4: Simplify right side
    225,009.86x = 31,014,304,189.44
  5. Step 5: Solve for x
    x = 31,014,304,189.44/225,009.86
  6. Step 6: Final answer
    x = 137,835.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.