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Finding the Fourth Proportional to 140,986.40, 211,489.20 and 41,146.40

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Solution

The fourth proportional to 140,986.40, 211,489.20 and 41,146.40 is: 61,722.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,986.40 : 211,489.20 = 41,146.40 : x
  2. Step 2: Convert to fraction form
    140,986.40/211,489.20 = 41,146.40/x
  3. Step 3: Cross multiply
    140,986.40x = 211,489.20 × 41,146.40
  4. Step 4: Simplify right side
    140,986.40x = 8,702,019,218.88
  5. Step 5: Solve for x
    x = 8,702,019,218.88/140,986.40
  6. Step 6: Final answer
    x = 61,722.40

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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.