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Finding the Fourth Proportional to 140,002.73, 209,919.65 and 55,775.89

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Solution

The fourth proportional to 140,002.73, 209,919.65 and 55,775.89 is: 83,630.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,002.73 : 209,919.65 = 55,775.89 : x
  2. Step 2: Convert to fraction form
    140,002.73/209,919.65 = 55,775.89/x
  3. Step 3: Cross multiply
    140,002.73x = 209,919.65 × 55,775.89
  4. Step 4: Simplify right side
    140,002.73x = 11,708,455,604.50
  5. Step 5: Solve for x
    x = 11,708,455,604.50/140,002.73
  6. Step 6: Final answer
    x = 83,630.20

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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.