Home / 222,689.68-307,331.10-122,107.12

Finding the Fourth Proportional to 222,689.68, 307,331.10 and 122,107.12

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Solution

The fourth proportional to 222,689.68, 307,331.10 and 122,107.12 is: 168,518.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,689.68 : 307,331.10 = 122,107.12 : x
  2. Step 2: Convert to fraction form
    222,689.68/307,331.10 = 122,107.12/x
  3. Step 3: Cross multiply
    222,689.68x = 307,331.10 × 122,107.12
  4. Step 4: Simplify right side
    222,689.68x = 37,527,315,507.43
  5. Step 5: Solve for x
    x = 37,527,315,507.43/222,689.68
  6. Step 6: Final answer
    x = 168,518.43

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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.