Home / 116,621.05-160,789.92-76,270.90

Finding the Fourth Proportional to 116,621.05, 160,789.92 and 76,270.90

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Solution

The fourth proportional to 116,621.05, 160,789.92 and 76,270.90 is: 105,157.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,621.05 : 160,789.92 = 76,270.90 : x
  2. Step 2: Convert to fraction form
    116,621.05/160,789.92 = 76,270.90/x
  3. Step 3: Cross multiply
    116,621.05x = 160,789.92 × 76,270.90
  4. Step 4: Simplify right side
    116,621.05x = 12,263,591,909.33
  5. Step 5: Solve for x
    x = 12,263,591,909.33/116,621.05
  6. Step 6: Final answer
    x = 105,157.62

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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.