Home / 80,021,162.88-120,031,745.76-19,436,480.64

Finding the Fourth Proportional to 80,021,162.88, 120,031,745.76 and 19,436,480.64

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Solution

The fourth proportional to 80,021,162.88, 120,031,745.76 and 19,436,480.64 is: 29,154,721.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,021,162.88 : 120,031,745.76 = 19,436,480.64 : x
  2. Step 2: Convert to fraction form
    80,021,162.88/120,031,745.76 = 19,436,480.64/x
  3. Step 3: Cross multiply
    80,021,162.88x = 120,031,745.76 × 19,436,480.64
  4. Step 4: Simplify right side
    80,021,162.88x = 2,332,994,702,649,642.50
  5. Step 5: Solve for x
    x = 2,332,994,702,649,642.50/80,021,162.88
  6. Step 6: Final answer
    x = 29,154,721.31

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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.