Home / 206,970,170.78-310,498,103.60-84,148,509.11

Finding the Fourth Proportional to 206,970,170.78, 310,498,103.60 and 84,148,509.11

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Solution

The fourth proportional to 206,970,170.78, 310,498,103.60 and 84,148,509.11 is: 126,240,184.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,970,170.78 : 310,498,103.60 = 84,148,509.11 : x
  2. Step 2: Convert to fraction form
    206,970,170.78/310,498,103.60 = 84,148,509.11/x
  3. Step 3: Cross multiply
    206,970,170.78x = 310,498,103.60 × 84,148,509.11
  4. Step 4: Simplify right side
    206,970,170.78x = 26,127,952,499,777,828
  5. Step 5: Solve for x
    x = 26,127,952,499,777,828/206,970,170.78
  6. Step 6: Final answer
    x = 126,240,184.28

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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.