Home / 225,566.12-311,291.58-128,796.18

Finding the Fourth Proportional to 225,566.12, 311,291.58 and 128,796.18

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Solution

The fourth proportional to 225,566.12, 311,291.58 and 128,796.18 is: 177,744.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,566.12 : 311,291.58 = 128,796.18 : x
  2. Step 2: Convert to fraction form
    225,566.12/311,291.58 = 128,796.18/x
  3. Step 3: Cross multiply
    225,566.12x = 311,291.58 × 128,796.18
  4. Step 4: Simplify right side
    225,566.12x = 40,093,166,370.16
  5. Step 5: Solve for x
    x = 40,093,166,370.16/225,566.12
  6. Step 6: Final answer
    x = 177,744.63

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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.