Home / 113,921.28-157,234.56-71,448.96

Finding the Fourth Proportional to 113,921.28, 157,234.56 and 71,448.96

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Solution

The fourth proportional to 113,921.28, 157,234.56 and 71,448.96 is: 98,614.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,921.28 : 157,234.56 = 71,448.96 : x
  2. Step 2: Convert to fraction form
    113,921.28/157,234.56 = 71,448.96/x
  3. Step 3: Cross multiply
    113,921.28x = 157,234.56 × 71,448.96
  4. Step 4: Simplify right side
    113,921.28x = 11,234,245,788.06
  5. Step 5: Solve for x
    x = 11,234,245,788.06/113,921.28
  6. Step 6: Final answer
    x = 98,614.11

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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.