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Finding the Fourth Proportional to 140,813.12, 211,220.06 and 40,975.71

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Solution

The fourth proportional to 140,813.12, 211,220.06 and 40,975.71 is: 61,463.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,813.12 : 211,220.06 = 40,975.71 : x
  2. Step 2: Convert to fraction form
    140,813.12/211,220.06 = 40,975.71/x
  3. Step 3: Cross multiply
    140,813.12x = 211,220.06 × 40,975.71
  4. Step 4: Simplify right side
    140,813.12x = 8,654,891,719.86
  5. Step 5: Solve for x
    x = 8,654,891,719.86/140,813.12
  6. Step 6: Final answer
    x = 61,463.68

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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.