Home / 99,531.20-148,932.30-73,287.20

Finding the Fourth Proportional to 99,531.20, 148,932.30 and 73,287.20

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Solution

The fourth proportional to 99,531.20, 148,932.30 and 73,287.20 is: 109,662.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,531.20 : 148,932.30 = 73,287.20 : x
  2. Step 2: Convert to fraction form
    99,531.20/148,932.30 = 73,287.20/x
  3. Step 3: Cross multiply
    99,531.20x = 148,932.30 × 73,287.20
  4. Step 4: Simplify right side
    99,531.20x = 10,914,831,256.56
  5. Step 5: Solve for x
    x = 10,914,831,256.56/99,531.20
  6. Step 6: Final answer
    x = 109,662.41

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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.