Home / 235,739.93-325,320.86-128,309.71

Finding the Fourth Proportional to 235,739.93, 325,320.86 and 128,309.71

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Solution

The fourth proportional to 235,739.93, 325,320.86 and 128,309.71 is: 177,067.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,739.93 : 325,320.86 = 128,309.71 : x
  2. Step 2: Convert to fraction form
    235,739.93/325,320.86 = 128,309.71/x
  3. Step 3: Cross multiply
    235,739.93x = 325,320.86 × 128,309.71
  4. Step 4: Simplify right side
    235,739.93x = 41,741,823,909.09
  5. Step 5: Solve for x
    x = 41,741,823,909.09/235,739.93
  6. Step 6: Final answer
    x = 177,067.26

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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.