Home / 142,334.96-196,429.84-81,914.80

Finding the Fourth Proportional to 142,334.96, 196,429.84 and 81,914.80

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Solution

The fourth proportional to 142,334.96, 196,429.84 and 81,914.80 is: 113,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,334.96 : 196,429.84 = 81,914.80 : x
  2. Step 2: Convert to fraction form
    142,334.96/196,429.84 = 81,914.80/x
  3. Step 3: Cross multiply
    142,334.96x = 196,429.84 × 81,914.80
  4. Step 4: Simplify right side
    142,334.96x = 16,090,511,057.63
  5. Step 5: Solve for x
    x = 16,090,511,057.63/142,334.96
  6. Step 6: Final answer
    x = 113,046.80

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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.