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Finding the Fourth Proportional to 140,752.59, 211,149.47 and 40,899.80

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Solution

The fourth proportional to 140,752.59, 211,149.47 and 40,899.80 is: 61,355.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,752.59 : 211,149.47 = 40,899.80 : x
  2. Step 2: Convert to fraction form
    140,752.59/211,149.47 = 40,899.80/x
  3. Step 3: Cross multiply
    140,752.59x = 211,149.47 × 40,899.80
  4. Step 4: Simplify right side
    140,752.59x = 8,635,971,981.70
  5. Step 5: Solve for x
    x = 8,635,971,981.70/140,752.59
  6. Step 6: Final answer
    x = 61,355.69

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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.