Home / 115,736.64-159,663.60-67,989.12

Finding the Fourth Proportional to 115,736.64, 159,663.60 and 67,989.12

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Solution

The fourth proportional to 115,736.64, 159,663.60 and 67,989.12 is: 93,793.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,736.64 : 159,663.60 = 67,989.12 : x
  2. Step 2: Convert to fraction form
    115,736.64/159,663.60 = 67,989.12/x
  3. Step 3: Cross multiply
    115,736.64x = 159,663.60 × 67,989.12
  4. Step 4: Simplify right side
    115,736.64x = 10,855,387,660.03
  5. Step 5: Solve for x
    x = 10,855,387,660.03/115,736.64
  6. Step 6: Final answer
    x = 93,793.87

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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.