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Finding the Fourth Proportional to 140,601.72, 210,924.46 and 45,809.85

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Solution

The fourth proportional to 140,601.72, 210,924.46 and 45,809.85 is: 68,721.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,601.72 : 210,924.46 = 45,809.85 : x
  2. Step 2: Convert to fraction form
    140,601.72/210,924.46 = 45,809.85/x
  3. Step 3: Cross multiply
    140,601.72x = 210,924.46 × 45,809.85
  4. Step 4: Simplify right side
    140,601.72x = 9,662,418,464.48
  5. Step 5: Solve for x
    x = 9,662,418,464.48/140,601.72
  6. Step 6: Final answer
    x = 68,721.91

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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.