Home / 235,723.76-325,306.77-128,297.69

Finding the Fourth Proportional to 235,723.76, 325,306.77 and 128,297.69

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Solution

The fourth proportional to 235,723.76, 325,306.77 and 128,297.69 is: 177,055.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,723.76 : 325,306.77 = 128,297.69 : x
  2. Step 2: Convert to fraction form
    235,723.76/325,306.77 = 128,297.69/x
  3. Step 3: Cross multiply
    235,723.76x = 325,306.77 × 128,297.69
  4. Step 4: Simplify right side
    235,723.76x = 41,736,107,132.36
  5. Step 5: Solve for x
    x = 41,736,107,132.36/235,723.76
  6. Step 6: Final answer
    x = 177,055.16

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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.