Home / 116,919.96-161,378.40-71,589.72

Finding the Fourth Proportional to 116,919.96, 161,378.40 and 71,589.72

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Solution

The fourth proportional to 116,919.96, 161,378.40 and 71,589.72 is: 98,811.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,919.96 : 161,378.40 = 71,589.72 : x
  2. Step 2: Convert to fraction form
    116,919.96/161,378.40 = 71,589.72/x
  3. Step 3: Cross multiply
    116,919.96x = 161,378.40 × 71,589.72
  4. Step 4: Simplify right side
    116,919.96x = 11,553,034,470.05
  5. Step 5: Solve for x
    x = 11,553,034,470.05/116,919.96
  6. Step 6: Final answer
    x = 98,811.48

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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.