Home / 100,194.96-138,269.26-54,255.11

Finding the Fourth Proportional to 100,194.96, 138,269.26 and 54,255.11

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Solution

The fourth proportional to 100,194.96, 138,269.26 and 54,255.11 is: 74,872.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,194.96 : 138,269.26 = 54,255.11 : x
  2. Step 2: Convert to fraction form
    100,194.96/138,269.26 = 54,255.11/x
  3. Step 3: Cross multiply
    100,194.96x = 138,269.26 × 54,255.11
  4. Step 4: Simplify right side
    100,194.96x = 7,501,812,948.30
  5. Step 5: Solve for x
    x = 7,501,812,948.30/100,194.96
  6. Step 6: Final answer
    x = 74,872.16

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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.