Home / 128,470.05-177,309.66-88,150.54

Finding the Fourth Proportional to 128,470.05, 177,309.66 and 88,150.54

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Solution

The fourth proportional to 128,470.05, 177,309.66 and 88,150.54 is: 121,662.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,470.05 : 177,309.66 = 88,150.54 : x
  2. Step 2: Convert to fraction form
    128,470.05/177,309.66 = 88,150.54/x
  3. Step 3: Cross multiply
    128,470.05x = 177,309.66 × 88,150.54
  4. Step 4: Simplify right side
    128,470.05x = 15,629,942,276.22
  5. Step 5: Solve for x
    x = 15,629,942,276.22/128,470.05
  6. Step 6: Final answer
    x = 121,662.15

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1.5x scale

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.