Home / 189,635.90-261,686.68-113,241.20

Finding the Fourth Proportional to 189,635.90, 261,686.68 and 113,241.20

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Solution

The fourth proportional to 189,635.90, 261,686.68 and 113,241.20 is: 156,266.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,635.90 : 261,686.68 = 113,241.20 : x
  2. Step 2: Convert to fraction form
    189,635.90/261,686.68 = 113,241.20/x
  3. Step 3: Cross multiply
    189,635.90x = 261,686.68 × 113,241.20
  4. Step 4: Simplify right side
    189,635.90x = 29,633,713,667.22
  5. Step 5: Solve for x
    x = 29,633,713,667.22/189,635.90
  6. Step 6: Final answer
    x = 156,266.37

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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.