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Finding the Fourth Proportional to 100,118.62, 138,160.31 and 54,795.63

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Solution

The fourth proportional to 100,118.62, 138,160.31 and 54,795.63 is: 75,616.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,118.62 : 138,160.31 = 54,795.63 : x
  2. Step 2: Convert to fraction form
    100,118.62/138,160.31 = 54,795.63/x
  3. Step 3: Cross multiply
    100,118.62x = 138,160.31 × 54,795.63
  4. Step 4: Simplify right side
    100,118.62x = 7,570,580,654.24
  5. Step 5: Solve for x
    x = 7,570,580,654.24/100,118.62
  6. Step 6: Final answer
    x = 75,616.11

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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.