Home / 103,090.24-154,540.20-71,515.20

Finding the Fourth Proportional to 103,090.24, 154,540.20 and 71,515.20

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Solution

The fourth proportional to 103,090.24, 154,540.20 and 71,515.20 is: 107,206.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,090.24 : 154,540.20 = 71,515.20 : x
  2. Step 2: Convert to fraction form
    103,090.24/154,540.20 = 71,515.20/x
  3. Step 3: Cross multiply
    103,090.24x = 154,540.20 × 71,515.20
  4. Step 4: Simplify right side
    103,090.24x = 11,051,973,311.04
  5. Step 5: Solve for x
    x = 11,051,973,311.04/103,090.24
  6. Step 6: Final answer
    x = 107,206.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.