Home / 103,239.43-154,850.64-73,129.30

Finding the Fourth Proportional to 103,239.43, 154,850.64 and 73,129.30

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Solution

The fourth proportional to 103,239.43, 154,850.64 and 73,129.30 is: 109,687.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,239.43 : 154,850.64 = 73,129.30 : x
  2. Step 2: Convert to fraction form
    103,239.43/154,850.64 = 73,129.30/x
  3. Step 3: Cross multiply
    103,239.43x = 154,850.64 × 73,129.30
  4. Step 4: Simplify right side
    103,239.43x = 11,324,118,907.75
  5. Step 5: Solve for x
    x = 11,324,118,907.75/103,239.43
  6. Step 6: Final answer
    x = 109,687.93

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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.