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Finding the Fourth Proportional to 225,107.53, 337,661.83 and 91,987.78

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Solution

The fourth proportional to 225,107.53, 337,661.83 and 91,987.78 is: 137,981.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,107.53 : 337,661.83 = 91,987.78 : x
  2. Step 2: Convert to fraction form
    225,107.53/337,661.83 = 91,987.78/x
  3. Step 3: Cross multiply
    225,107.53x = 337,661.83 × 91,987.78
  4. Step 4: Simplify right side
    225,107.53x = 31,060,762,132.44
  5. Step 5: Solve for x
    x = 31,060,762,132.44/225,107.53
  6. Step 6: Final answer
    x = 137,981.89

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1.5x scale

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.