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Finding the Fourth Proportional to 140,562.72, 210,708.77 and 51,767.79

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Solution

The fourth proportional to 140,562.72, 210,708.77 and 51,767.79 is: 77,601.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,562.72 : 210,708.77 = 51,767.79 : x
  2. Step 2: Convert to fraction form
    140,562.72/210,708.77 = 51,767.79/x
  3. Step 3: Cross multiply
    140,562.72x = 210,708.77 × 51,767.79
  4. Step 4: Simplify right side
    140,562.72x = 10,907,927,097.68
  5. Step 5: Solve for x
    x = 10,907,927,097.68/140,562.72
  6. Step 6: Final answer
    x = 77,601.85

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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.