Home / 131,258.88-196,845.12-72,161.28

Finding the Fourth Proportional to 131,258.88, 196,845.12 and 72,161.28

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Solution

The fourth proportional to 131,258.88, 196,845.12 and 72,161.28 is: 108,218.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,258.88 : 196,845.12 = 72,161.28 : x
  2. Step 2: Convert to fraction form
    131,258.88/196,845.12 = 72,161.28/x
  3. Step 3: Cross multiply
    131,258.88x = 196,845.12 × 72,161.28
  4. Step 4: Simplify right side
    131,258.88x = 14,204,595,820.95
  5. Step 5: Solve for x
    x = 14,204,595,820.95/131,258.88
  6. Step 6: Final answer
    x = 108,218.17

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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.