Home / 105,198.62-145,167.72-57,442.28

Finding the Fourth Proportional to 105,198.62, 145,167.72 and 57,442.28

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Solution

The fourth proportional to 105,198.62, 145,167.72 and 57,442.28 is: 79,266.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,198.62 : 145,167.72 = 57,442.28 : x
  2. Step 2: Convert to fraction form
    105,198.62/145,167.72 = 57,442.28/x
  3. Step 3: Cross multiply
    105,198.62x = 145,167.72 × 57,442.28
  4. Step 4: Simplify right side
    105,198.62x = 8,338,764,819.20
  5. Step 5: Solve for x
    x = 8,338,764,819.20/105,198.62
  6. Step 6: Final answer
    x = 79,266.87

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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.