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Finding the Fourth Proportional to 159,375.87, 219,939.53 and 91,395.41

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Solution

The fourth proportional to 159,375.87, 219,939.53 and 91,395.41 is: 126,126.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,375.87 : 219,939.53 = 91,395.41 : x
  2. Step 2: Convert to fraction form
    159,375.87/219,939.53 = 91,395.41/x
  3. Step 3: Cross multiply
    159,375.87x = 219,939.53 × 91,395.41
  4. Step 4: Simplify right side
    159,375.87x = 20,101,461,962.88
  5. Step 5: Solve for x
    x = 20,101,461,962.88/159,375.87
  6. Step 6: Final answer
    x = 126,126.13

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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.