Home / 235,839.85-325,455.75-128,409.88

Finding the Fourth Proportional to 235,839.85, 325,455.75 and 128,409.88

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Solution

The fourth proportional to 235,839.85, 325,455.75 and 128,409.88 is: 177,203.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,839.85 : 325,455.75 = 128,409.88 : x
  2. Step 2: Convert to fraction form
    235,839.85/325,455.75 = 128,409.88/x
  3. Step 3: Cross multiply
    235,839.85x = 325,455.75 × 128,409.88
  4. Step 4: Simplify right side
    235,839.85x = 41,791,734,153.59
  5. Step 5: Solve for x
    x = 41,791,734,153.59/235,839.85
  6. Step 6: Final answer
    x = 177,203.87

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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.