Home / 128,964.92-193,330.60-45,839.48

Finding the Fourth Proportional to 128,964.92, 193,330.60 and 45,839.48

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Solution

The fourth proportional to 128,964.92, 193,330.60 and 45,839.48 is: 68,717.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,964.92 : 193,330.60 = 45,839.48 : x
  2. Step 2: Convert to fraction form
    128,964.92/193,330.60 = 45,839.48/x
  3. Step 3: Cross multiply
    128,964.92x = 193,330.60 × 45,839.48
  4. Step 4: Simplify right side
    128,964.92x = 8,862,174,172.09
  5. Step 5: Solve for x
    x = 8,862,174,172.09/128,964.92
  6. Step 6: Final answer
    x = 68,717.71

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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.