Home / 100,207.62-138,284.96-54,885.29

Finding the Fourth Proportional to 100,207.62, 138,284.96 and 54,885.29

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Solution

The fourth proportional to 100,207.62, 138,284.96 and 54,885.29 is: 75,740.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,207.62 : 138,284.96 = 54,885.29 : x
  2. Step 2: Convert to fraction form
    100,207.62/138,284.96 = 54,885.29/x
  3. Step 3: Cross multiply
    100,207.62x = 138,284.96 × 54,885.29
  4. Step 4: Simplify right side
    100,207.62x = 7,589,809,166.39
  5. Step 5: Solve for x
    x = 7,589,809,166.39/100,207.62
  6. Step 6: Final answer
    x = 75,740.84

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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.