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Finding the Fourth Proportional to 203,594.45, 305,493.53 and 91,354.91

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Solution

The fourth proportional to 203,594.45, 305,493.53 and 91,354.91 is: 137,078.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,594.45 : 305,493.53 = 91,354.91 : x
  2. Step 2: Convert to fraction form
    203,594.45/305,493.53 = 91,354.91/x
  3. Step 3: Cross multiply
    203,594.45x = 305,493.53 × 91,354.91
  4. Step 4: Simplify right side
    203,594.45x = 27,908,331,954.49
  5. Step 5: Solve for x
    x = 27,908,331,954.49/203,594.45
  6. Step 6: Final answer
    x = 137,078.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.