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Finding the Fourth Proportional to 140,108.80, 210,147.66 and 50,147.90

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Solution

The fourth proportional to 140,108.80, 210,147.66 and 50,147.90 is: 75,216.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,108.80 : 210,147.66 = 50,147.90 : x
  2. Step 2: Convert to fraction form
    140,108.80/210,147.66 = 50,147.90/x
  3. Step 3: Cross multiply
    140,108.80x = 210,147.66 × 50,147.90
  4. Step 4: Simplify right side
    140,108.80x = 10,538,463,838.91
  5. Step 5: Solve for x
    x = 10,538,463,838.91/140,108.80
  6. Step 6: Final answer
    x = 75,216.29

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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.