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Finding the Fourth Proportional to 140,736.70, 211,118.90 and 40,897.77

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Solution

The fourth proportional to 140,736.70, 211,118.90 and 40,897.77 is: 61,350.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,736.70 : 211,118.90 = 40,897.77 : x
  2. Step 2: Convert to fraction form
    140,736.70/211,118.90 = 40,897.77/x
  3. Step 3: Cross multiply
    140,736.70x = 211,118.90 × 40,897.77
  4. Step 4: Simplify right side
    140,736.70x = 8,634,292,214.85
  5. Step 5: Solve for x
    x = 8,634,292,214.85/140,736.70
  6. Step 6: Final answer
    x = 61,350.68

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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.