Home / 131,170.80-196,757.28-81,395.76

Finding the Fourth Proportional to 131,170.80, 196,757.28 and 81,395.76

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Solution

The fourth proportional to 131,170.80, 196,757.28 and 81,395.76 is: 122,094.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,170.80 : 196,757.28 = 81,395.76 : x
  2. Step 2: Convert to fraction form
    131,170.80/196,757.28 = 81,395.76/x
  3. Step 3: Cross multiply
    131,170.80x = 196,757.28 × 81,395.76
  4. Step 4: Simplify right side
    131,170.80x = 16,015,208,341.13
  5. Step 5: Solve for x
    x = 16,015,208,341.13/131,170.80
  6. Step 6: Final answer
    x = 122,094.31

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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.