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Finding the Fourth Proportional to 140,668.34, 210,958.43 and 40,835.43

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Solution

The fourth proportional to 140,668.34, 210,958.43 and 40,835.43 is: 61,240.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,668.34 : 210,958.43 = 40,835.43 : x
  2. Step 2: Convert to fraction form
    140,668.34/210,958.43 = 40,835.43/x
  3. Step 3: Cross multiply
    140,668.34x = 210,958.43 × 40,835.43
  4. Step 4: Simplify right side
    140,668.34x = 8,614,577,997.00
  5. Step 5: Solve for x
    x = 8,614,577,997.00/140,668.34
  6. Step 6: Final answer
    x = 61,240.35

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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.