Home / 141,857.84-195,708.88-81,406.64

Finding the Fourth Proportional to 141,857.84, 195,708.88 and 81,406.64

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Solution

The fourth proportional to 141,857.84, 195,708.88 and 81,406.64 is: 112,309.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,857.84 : 195,708.88 = 81,406.64 : x
  2. Step 2: Convert to fraction form
    141,857.84/195,708.88 = 81,406.64/x
  3. Step 3: Cross multiply
    141,857.84x = 195,708.88 × 81,406.64
  4. Step 4: Simplify right side
    141,857.84x = 15,932,002,338.96
  5. Step 5: Solve for x
    x = 15,932,002,338.96/141,857.84
  6. Step 6: Final answer
    x = 112,309.64

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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.