Home / 100,523.16-138,722.09-55,204.07

Finding the Fourth Proportional to 100,523.16, 138,722.09 and 55,204.07

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Solution

The fourth proportional to 100,523.16, 138,722.09 and 55,204.07 is: 76,181.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,523.16 : 138,722.09 = 55,204.07 : x
  2. Step 2: Convert to fraction form
    100,523.16/138,722.09 = 55,204.07/x
  3. Step 3: Cross multiply
    100,523.16x = 138,722.09 × 55,204.07
  4. Step 4: Simplify right side
    100,523.16x = 7,658,022,997.28
  5. Step 5: Solve for x
    x = 7,658,022,997.28/100,523.16
  6. Step 6: Final answer
    x = 76,181.68

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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.