Home / 120,887,998.80-181,331,998.20-87,127,717.20

Finding the Fourth Proportional to 120,887,998.80, 181,331,998.20 and 87,127,717.20

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Solution

The fourth proportional to 120,887,998.80, 181,331,998.20 and 87,127,717.20 is: 130,691,575.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,887,998.80 : 181,331,998.20 = 87,127,717.20 : x
  2. Step 2: Convert to fraction form
    120,887,998.80/181,331,998.20 = 87,127,717.20/x
  3. Step 3: Cross multiply
    120,887,998.80x = 181,331,998.20 × 87,127,717.20
  4. Step 4: Simplify right side
    120,887,998.80x = 15,799,043,058,480,508
  5. Step 5: Solve for x
    x = 15,799,043,058,480,508/120,887,998.80
  6. Step 6: Final answer
    x = 130,691,575.80

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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.