Home / 131,178.12-196,513.43-109,865.09

Finding the Fourth Proportional to 131,178.12, 196,513.43 and 109,865.09

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Solution

The fourth proportional to 131,178.12, 196,513.43 and 109,865.09 is: 164,585.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,178.12 : 196,513.43 = 109,865.09 : x
  2. Step 2: Convert to fraction form
    131,178.12/196,513.43 = 109,865.09/x
  3. Step 3: Cross multiply
    131,178.12x = 196,513.43 × 109,865.09
  4. Step 4: Simplify right side
    131,178.12x = 21,589,965,615.12
  5. Step 5: Solve for x
    x = 21,589,965,615.12/131,178.12
  6. Step 6: Final answer
    x = 164,585.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.