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Finding the Fourth Proportional to 140,542.32, 210,841.72 and 51,796.32

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Solution

The fourth proportional to 140,542.32, 210,841.72 and 51,796.32 is: 77,704.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,542.32 : 210,841.72 = 51,796.32 : x
  2. Step 2: Convert to fraction form
    140,542.32/210,841.72 = 51,796.32/x
  3. Step 3: Cross multiply
    140,542.32x = 210,841.72 × 51,796.32
  4. Step 4: Simplify right side
    140,542.32x = 10,920,825,198.47
  5. Step 5: Solve for x
    x = 10,920,825,198.47/140,542.32
  6. Step 6: Final answer
    x = 77,704.89

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1.5x scale

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.