Home / 172,039,101.40-258,058,652.10-86,042,762.20

Finding the Fourth Proportional to 172,039,101.40, 258,058,652.10 and 86,042,762.20

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Solution

The fourth proportional to 172,039,101.40, 258,058,652.10 and 86,042,762.20 is: 129,064,143.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,039,101.40 : 258,058,652.10 = 86,042,762.20 : x
  2. Step 2: Convert to fraction form
    172,039,101.40/258,058,652.10 = 86,042,762.20/x
  3. Step 3: Cross multiply
    172,039,101.40x = 258,058,652.10 × 86,042,762.20
  4. Step 4: Simplify right side
    172,039,101.40x = 22,204,079,236,292,832
  5. Step 5: Solve for x
    x = 22,204,079,236,292,832/172,039,101.40
  6. Step 6: Final answer
    x = 129,064,143.30

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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.