Home / 235,986.30-325,659.50-128,556.40

Finding the Fourth Proportional to 235,986.30, 325,659.50 and 128,556.40

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Solution

The fourth proportional to 235,986.30, 325,659.50 and 128,556.40 is: 177,406.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,986.30 : 325,659.50 = 128,556.40 : x
  2. Step 2: Convert to fraction form
    235,986.30/325,659.50 = 128,556.40/x
  3. Step 3: Cross multiply
    235,986.30x = 325,659.50 × 128,556.40
  4. Step 4: Simplify right side
    235,986.30x = 41,865,612,945.80
  5. Step 5: Solve for x
    x = 41,865,612,945.80/235,986.30
  6. Step 6: Final answer
    x = 177,406.96

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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.