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Finding the Fourth Proportional to 140,699.90, 211,060.84 and 40,861.74

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Solution

The fourth proportional to 140,699.90, 211,060.84 and 40,861.74 is: 61,295.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,699.90 : 211,060.84 = 40,861.74 : x
  2. Step 2: Convert to fraction form
    140,699.90/211,060.84 = 40,861.74/x
  3. Step 3: Cross multiply
    140,699.90x = 211,060.84 × 40,861.74
  4. Step 4: Simplify right side
    140,699.90x = 8,624,313,168.26
  5. Step 5: Solve for x
    x = 8,624,313,168.26/140,699.90
  6. Step 6: Final answer
    x = 61,295.80

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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.