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Finding the Fourth Proportional to 189,520.88, 261,227.34 and 134,349

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Solution

The fourth proportional to 189,520.88, 261,227.34 and 134,349 is: 185,180.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,520.88 : 261,227.34 = 134,349 : x
  2. Step 2: Convert to fraction form
    189,520.88/261,227.34 = 134,349/x
  3. Step 3: Cross multiply
    189,520.88x = 261,227.34 × 134,349
  4. Step 4: Simplify right side
    189,520.88x = 35,095,631,901.66
  5. Step 5: Solve for x
    x = 35,095,631,901.66/189,520.88
  6. Step 6: Final answer
    x = 185,180.82

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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.