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Finding the Fourth Proportional to 158,634.62, 218,913.73 and 90,650.82

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Solution

The fourth proportional to 158,634.62, 218,913.73 and 90,650.82 is: 125,096.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,634.62 : 218,913.73 = 90,650.82 : x
  2. Step 2: Convert to fraction form
    158,634.62/218,913.73 = 90,650.82/x
  3. Step 3: Cross multiply
    158,634.62x = 218,913.73 × 90,650.82
  4. Step 4: Simplify right side
    158,634.62x = 19,844,709,133.76
  5. Step 5: Solve for x
    x = 19,844,709,133.76/158,634.62
  6. Step 6: Final answer
    x = 125,096.96

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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.