Home / 128,163.18-175,580.63-123,371.35

Finding the Fourth Proportional to 128,163.18, 175,580.63 and 123,371.35

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Solution

The fourth proportional to 128,163.18, 175,580.63 and 123,371.35 is: 169,015.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,163.18 : 175,580.63 = 123,371.35 : x
  2. Step 2: Convert to fraction form
    128,163.18/175,580.63 = 123,371.35/x
  3. Step 3: Cross multiply
    128,163.18x = 175,580.63 × 123,371.35
  4. Step 4: Simplify right side
    128,163.18x = 21,661,619,356.95
  5. Step 5: Solve for x
    x = 21,661,619,356.95/128,163.18
  6. Step 6: Final answer
    x = 169,015.93

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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.