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Finding the Fourth Proportional to 154,805.70, 213,634.08 and 115,974.72

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Solution

The fourth proportional to 154,805.70, 213,634.08 and 115,974.72 is: 160,046.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,805.70 : 213,634.08 = 115,974.72 : x
  2. Step 2: Convert to fraction form
    154,805.70/213,634.08 = 115,974.72/x
  3. Step 3: Cross multiply
    154,805.70x = 213,634.08 × 115,974.72
  4. Step 4: Simplify right side
    154,805.70x = 24,776,152,610.46
  5. Step 5: Solve for x
    x = 24,776,152,610.46/154,805.70
  6. Step 6: Final answer
    x = 160,046.77

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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.