Home / 222,138.62-306,426.74-136,139.30

Finding the Fourth Proportional to 222,138.62, 306,426.74 and 136,139.30

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Solution

The fourth proportional to 222,138.62, 306,426.74 and 136,139.30 is: 187,795.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,138.62 : 306,426.74 = 136,139.30 : x
  2. Step 2: Convert to fraction form
    222,138.62/306,426.74 = 136,139.30/x
  3. Step 3: Cross multiply
    222,138.62x = 306,426.74 × 136,139.30
  4. Step 4: Simplify right side
    222,138.62x = 41,716,719,672.05
  5. Step 5: Solve for x
    x = 41,716,719,672.05/222,138.62
  6. Step 6: Final answer
    x = 187,795.89

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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.