Home / 206,172,001.80-309,258,002.70-91,097,310.60

Finding the Fourth Proportional to 206,172,001.80, 309,258,002.70 and 91,097,310.60

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Solution

The fourth proportional to 206,172,001.80, 309,258,002.70 and 91,097,310.60 is: 136,645,965.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,172,001.80 : 309,258,002.70 = 91,097,310.60 : x
  2. Step 2: Convert to fraction form
    206,172,001.80/309,258,002.70 = 91,097,310.60/x
  3. Step 3: Cross multiply
    206,172,001.80x = 309,258,002.70 × 91,097,310.60
  4. Step 4: Simplify right side
    206,172,001.80x = 28,172,572,327,497,536
  5. Step 5: Solve for x
    x = 28,172,572,327,497,536/206,172,001.80
  6. Step 6: Final answer
    x = 136,645,965.90

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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.