Home / 235,775.45-325,370.16-128,346.29

Finding the Fourth Proportional to 235,775.45, 325,370.16 and 128,346.29

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Solution

The fourth proportional to 235,775.45, 325,370.16 and 128,346.29 is: 177,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,775.45 : 325,370.16 = 128,346.29 : x
  2. Step 2: Convert to fraction form
    235,775.45/325,370.16 = 128,346.29/x
  3. Step 3: Cross multiply
    235,775.45x = 325,370.16 × 128,346.29
  4. Step 4: Simplify right side
    235,775.45x = 41,760,052,505.99
  5. Step 5: Solve for x
    x = 41,760,052,505.99/235,775.45
  6. Step 6: Final answer
    x = 177,117.90

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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.