Home / 100,912.32-151,385.04-82,356.48

Finding the Fourth Proportional to 100,912.32, 151,385.04 and 82,356.48

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Solution

The fourth proportional to 100,912.32, 151,385.04 and 82,356.48 is: 123,548.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,912.32 : 151,385.04 = 82,356.48 : x
  2. Step 2: Convert to fraction form
    100,912.32/151,385.04 = 82,356.48/x
  3. Step 3: Cross multiply
    100,912.32x = 151,385.04 × 82,356.48
  4. Step 4: Simplify right side
    100,912.32x = 12,467,539,019.06
  5. Step 5: Solve for x
    x = 12,467,539,019.06/100,912.32
  6. Step 6: Final answer
    x = 123,548.23

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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.