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Finding the Fourth Proportional to 100,241.46, 138,308.85 and 55,529.46

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Solution

The fourth proportional to 100,241.46, 138,308.85 and 55,529.46 is: 76,617.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,241.46 : 138,308.85 = 55,529.46 : x
  2. Step 2: Convert to fraction form
    100,241.46/138,308.85 = 55,529.46/x
  3. Step 3: Cross multiply
    100,241.46x = 138,308.85 × 55,529.46
  4. Step 4: Simplify right side
    100,241.46x = 7,680,215,753.72
  5. Step 5: Solve for x
    x = 7,680,215,753.72/100,241.46
  6. Step 6: Final answer
    x = 76,617.16

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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.