Home / 154,939.92-213,814.28-86,951.56

Finding the Fourth Proportional to 154,939.92, 213,814.28 and 86,951.56

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Solution

The fourth proportional to 154,939.92, 213,814.28 and 86,951.56 is: 119,991.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,939.92 : 213,814.28 = 86,951.56 : x
  2. Step 2: Convert to fraction form
    154,939.92/213,814.28 = 86,951.56/x
  3. Step 3: Cross multiply
    154,939.92x = 213,814.28 × 86,951.56
  4. Step 4: Simplify right side
    154,939.92x = 18,591,485,280.02
  5. Step 5: Solve for x
    x = 18,591,485,280.02/154,939.92
  6. Step 6: Final answer
    x = 119,991.58

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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.