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Finding the Fourth Proportional to 149,156.52, 205,912.17 and 115,088.46

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Solution

The fourth proportional to 149,156.52, 205,912.17 and 115,088.46 is: 158,880.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,156.52 : 205,912.17 = 115,088.46 : x
  2. Step 2: Convert to fraction form
    149,156.52/205,912.17 = 115,088.46/x
  3. Step 3: Cross multiply
    149,156.52x = 205,912.17 × 115,088.46
  4. Step 4: Simplify right side
    149,156.52x = 23,698,114,540.56
  5. Step 5: Solve for x
    x = 23,698,114,540.56/149,156.52
  6. Step 6: Final answer
    x = 158,880.85

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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.