Home / 105,378.12-157,891.68-74,147.76

Finding the Fourth Proportional to 105,378.12, 157,891.68 and 74,147.76

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Solution

The fourth proportional to 105,378.12, 157,891.68 and 74,147.76 is: 111,098.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,378.12 : 157,891.68 = 74,147.76 : x
  2. Step 2: Convert to fraction form
    105,378.12/157,891.68 = 74,147.76/x
  3. Step 3: Cross multiply
    105,378.12x = 157,891.68 × 74,147.76
  4. Step 4: Simplify right side
    105,378.12x = 11,707,314,394.64
  5. Step 5: Solve for x
    x = 11,707,314,394.64/105,378.12
  6. Step 6: Final answer
    x = 111,098.15

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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.