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Finding the Fourth Proportional to 96,387.80, 144,927.30 and 81,181.40

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Solution

The fourth proportional to 96,387.80, 144,927.30 and 81,181.40 is: 122,063.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,387.80 : 144,927.30 = 81,181.40 : x
  2. Step 2: Convert to fraction form
    96,387.80/144,927.30 = 81,181.40/x
  3. Step 3: Cross multiply
    96,387.80x = 144,927.30 × 81,181.40
  4. Step 4: Simplify right side
    96,387.80x = 11,765,401,112.22
  5. Step 5: Solve for x
    x = 11,765,401,112.22/96,387.80
  6. Step 6: Final answer
    x = 122,063.18

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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.