Home / 105,198.66-145,175.30-57,453.40

Finding the Fourth Proportional to 105,198.66, 145,175.30 and 57,453.40

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Solution

The fourth proportional to 105,198.66, 145,175.30 and 57,453.40 is: 79,286.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,198.66 : 145,175.30 = 57,453.40 : x
  2. Step 2: Convert to fraction form
    105,198.66/145,175.30 = 57,453.40/x
  3. Step 3: Cross multiply
    105,198.66x = 145,175.30 × 57,453.40
  4. Step 4: Simplify right side
    105,198.66x = 8,340,814,581.02
  5. Step 5: Solve for x
    x = 8,340,814,581.02/105,198.66
  6. Step 6: Final answer
    x = 79,286.32

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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.