Home / 123,563.20-185,517.60-76,907.20

Finding the Fourth Proportional to 123,563.20, 185,517.60 and 76,907.20

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Solution

The fourth proportional to 123,563.20, 185,517.60 and 76,907.20 is: 115,468.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,563.20 : 185,517.60 = 76,907.20 : x
  2. Step 2: Convert to fraction form
    123,563.20/185,517.60 = 76,907.20/x
  3. Step 3: Cross multiply
    123,563.20x = 185,517.60 × 76,907.20
  4. Step 4: Simplify right side
    123,563.20x = 14,267,639,166.72
  5. Step 5: Solve for x
    x = 14,267,639,166.72/123,563.20
  6. Step 6: Final answer
    x = 115,468.35

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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.