Home / 141,990.35-195,940.08-81,518.42

Finding the Fourth Proportional to 141,990.35, 195,940.08 and 81,518.42

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Solution

The fourth proportional to 141,990.35, 195,940.08 and 81,518.42 is: 112,491.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,990.35 : 195,940.08 = 81,518.42 : x
  2. Step 2: Convert to fraction form
    141,990.35/195,940.08 = 81,518.42/x
  3. Step 3: Cross multiply
    141,990.35x = 195,940.08 × 81,518.42
  4. Step 4: Simplify right side
    141,990.35x = 15,972,726,226.12
  5. Step 5: Solve for x
    x = 15,972,726,226.12/141,990.35
  6. Step 6: Final answer
    x = 112,491.64

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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.