Home / 128,162.18-175,579.26-123,370.35

Finding the Fourth Proportional to 128,162.18, 175,579.26 and 123,370.35

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Solution

The fourth proportional to 128,162.18, 175,579.26 and 123,370.35 is: 169,014.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,162.18 : 175,579.26 = 123,370.35 : x
  2. Step 2: Convert to fraction form
    128,162.18/175,579.26 = 123,370.35/x
  3. Step 3: Cross multiply
    128,162.18x = 175,579.26 × 123,370.35
  4. Step 4: Simplify right side
    128,162.18x = 21,661,274,758.94
  5. Step 5: Solve for x
    x = 21,661,274,758.94/128,162.18
  6. Step 6: Final answer
    x = 169,014.57

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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.