Home / 172,039,105.40-258,058,658.10-86,042,766.20

Finding the Fourth Proportional to 172,039,105.40, 258,058,658.10 and 86,042,766.20

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Solution

The fourth proportional to 172,039,105.40, 258,058,658.10 and 86,042,766.20 is: 129,064,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,039,105.40 : 258,058,658.10 = 86,042,766.20 : x
  2. Step 2: Convert to fraction form
    172,039,105.40/258,058,658.10 = 86,042,766.20/x
  3. Step 3: Cross multiply
    172,039,105.40x = 258,058,658.10 × 86,042,766.20
  4. Step 4: Simplify right side
    172,039,105.40x = 22,204,080,784,784,036
  5. Step 5: Solve for x
    x = 22,204,080,784,784,036/172,039,105.40
  6. Step 6: Final answer
    x = 129,064,149.30

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Similar ratio
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1.5x scale

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.