Home / 77,198.10-115,737.87-39,216.18

Finding the Fourth Proportional to 77,198.10, 115,737.87 and 39,216.18

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Solution

The fourth proportional to 77,198.10, 115,737.87 and 39,216.18 is: 58,794.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,198.10 : 115,737.87 = 39,216.18 : x
  2. Step 2: Convert to fraction form
    77,198.10/115,737.87 = 39,216.18/x
  3. Step 3: Cross multiply
    77,198.10x = 115,737.87 × 39,216.18
  4. Step 4: Simplify right side
    77,198.10x = 4,538,797,142.74
  5. Step 5: Solve for x
    x = 4,538,797,142.74/77,198.10
  6. Step 6: Final answer
    x = 58,794.16

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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.