Home / 128,163.27-175,580.76-123,371.45

Finding the Fourth Proportional to 128,163.27, 175,580.76 and 123,371.45

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Solution

The fourth proportional to 128,163.27, 175,580.76 and 123,371.45 is: 169,016.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,163.27 : 175,580.76 = 123,371.45 : x
  2. Step 2: Convert to fraction form
    128,163.27/175,580.76 = 123,371.45/x
  3. Step 3: Cross multiply
    128,163.27x = 175,580.76 × 123,371.45
  4. Step 4: Simplify right side
    128,163.27x = 21,661,652,953.30
  5. Step 5: Solve for x
    x = 21,661,652,953.30/128,163.27
  6. Step 6: Final answer
    x = 169,016.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.