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Finding the Fourth Proportional to 140,755.62, 211,136.13 and 45,986.07

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Solution

The fourth proportional to 140,755.62, 211,136.13 and 45,986.07 is: 68,979.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,755.62 : 211,136.13 = 45,986.07 : x
  2. Step 2: Convert to fraction form
    140,755.62/211,136.13 = 45,986.07/x
  3. Step 3: Cross multiply
    140,755.62x = 211,136.13 × 45,986.07
  4. Step 4: Simplify right side
    140,755.62x = 9,709,320,853.71
  5. Step 5: Solve for x
    x = 9,709,320,853.71/140,755.62
  6. Step 6: Final answer
    x = 68,979.99

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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.