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Finding the Fourth Proportional to 123,750.80, 185,629.12 and 30,257.36

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Solution

The fourth proportional to 123,750.80, 185,629.12 and 30,257.36 is: 45,386.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,750.80 : 185,629.12 = 30,257.36 : x
  2. Step 2: Convert to fraction form
    123,750.80/185,629.12 = 30,257.36/x
  3. Step 3: Cross multiply
    123,750.80x = 185,629.12 × 30,257.36
  4. Step 4: Simplify right side
    123,750.80x = 5,616,647,110.32
  5. Step 5: Solve for x
    x = 5,616,647,110.32/123,750.80
  6. Step 6: Final answer
    x = 45,386.75

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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.