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Finding the Fourth Proportional to 100,162.63, 138,224.44 and 54,840.62

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Solution

The fourth proportional to 100,162.63, 138,224.44 and 54,840.62 is: 75,680.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,162.63 : 138,224.44 = 54,840.62 : x
  2. Step 2: Convert to fraction form
    100,162.63/138,224.44 = 54,840.62/x
  3. Step 3: Cross multiply
    100,162.63x = 138,224.44 × 54,840.62
  4. Step 4: Simplify right side
    100,162.63x = 7,580,313,160.53
  5. Step 5: Solve for x
    x = 7,580,313,160.53/100,162.63
  6. Step 6: Final answer
    x = 75,680.05

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1.5x scale

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.