Home / 189,311.84-261,230.14-104,428.90

Finding the Fourth Proportional to 189,311.84, 261,230.14 and 104,428.90

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Solution

The fourth proportional to 189,311.84, 261,230.14 and 104,428.90 is: 144,100.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,311.84 : 261,230.14 = 104,428.90 : x
  2. Step 2: Convert to fraction form
    189,311.84/261,230.14 = 104,428.90/x
  3. Step 3: Cross multiply
    189,311.84x = 261,230.14 × 104,428.90
  4. Step 4: Simplify right side
    189,311.84x = 27,279,976,167.05
  5. Step 5: Solve for x
    x = 27,279,976,167.05/189,311.84
  6. Step 6: Final answer
    x = 144,100.74

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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.