Home / 105,255.20-157,908.72-74,151.20

Finding the Fourth Proportional to 105,255.20, 157,908.72 and 74,151.20

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Solution

The fourth proportional to 105,255.20, 157,908.72 and 74,151.20 is: 111,245.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,255.20 : 157,908.72 = 74,151.20 : x
  2. Step 2: Convert to fraction form
    105,255.20/157,908.72 = 74,151.20/x
  3. Step 3: Cross multiply
    105,255.20x = 157,908.72 × 74,151.20
  4. Step 4: Simplify right side
    105,255.20x = 11,709,121,078.46
  5. Step 5: Solve for x
    x = 11,709,121,078.46/105,255.20
  6. Step 6: Final answer
    x = 111,245.06

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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.