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Finding the Fourth Proportional to 140,553.30, 210,829.95 and 131,805.30

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Solution

The fourth proportional to 140,553.30, 210,829.95 and 131,805.30 is: 197,707.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,553.30 : 210,829.95 = 131,805.30 : x
  2. Step 2: Convert to fraction form
    140,553.30/210,829.95 = 131,805.30/x
  3. Step 3: Cross multiply
    140,553.30x = 210,829.95 × 131,805.30
  4. Step 4: Simplify right side
    140,553.30x = 27,788,504,808.74
  5. Step 5: Solve for x
    x = 27,788,504,808.74/140,553.30
  6. Step 6: Final answer
    x = 197,707.95

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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.