Home / 189,638.53-261,709.13-109,066.12

Finding the Fourth Proportional to 189,638.53, 261,709.13 and 109,066.12

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Solution

The fourth proportional to 189,638.53, 261,709.13 and 109,066.12 is: 150,515.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,638.53 : 261,709.13 = 109,066.12 : x
  2. Step 2: Convert to fraction form
    189,638.53/261,709.13 = 109,066.12/x
  3. Step 3: Cross multiply
    189,638.53x = 261,709.13 × 109,066.12
  4. Step 4: Simplify right side
    189,638.53x = 28,543,598,996.07
  5. Step 5: Solve for x
    x = 28,543,598,996.07/189,638.53
  6. Step 6: Final answer
    x = 150,515.82

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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.