Home / 100,562.72-138,787.44-64,297.04

Finding the Fourth Proportional to 100,562.72, 138,787.44 and 64,297.04

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Solution

The fourth proportional to 100,562.72, 138,787.44 and 64,297.04 is: 88,736.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,562.72 : 138,787.44 = 64,297.04 : x
  2. Step 2: Convert to fraction form
    100,562.72/138,787.44 = 64,297.04/x
  3. Step 3: Cross multiply
    100,562.72x = 138,787.44 × 64,297.04
  4. Step 4: Simplify right side
    100,562.72x = 8,923,621,581.18
  5. Step 5: Solve for x
    x = 8,923,621,581.18/100,562.72
  6. Step 6: Final answer
    x = 88,736.88

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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.