Home / 222,138.28-306,558.48-121,536.28

Finding the Fourth Proportional to 222,138.28, 306,558.48 and 121,536.28

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Solution

The fourth proportional to 222,138.28, 306,558.48 and 121,536.28 is: 167,724.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,138.28 : 306,558.48 = 121,536.28 : x
  2. Step 2: Convert to fraction form
    222,138.28/306,558.48 = 121,536.28/x
  3. Step 3: Cross multiply
    222,138.28x = 306,558.48 × 121,536.28
  4. Step 4: Simplify right side
    222,138.28x = 37,257,977,261.65
  5. Step 5: Solve for x
    x = 37,257,977,261.65/222,138.28
  6. Step 6: Final answer
    x = 167,724.25

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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.