Home / 84,524,231.20-126,786,346.80-78,813,536.80

Finding the Fourth Proportional to 84,524,231.20, 126,786,346.80 and 78,813,536.80

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Solution

The fourth proportional to 84,524,231.20, 126,786,346.80 and 78,813,536.80 is: 118,220,305.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,524,231.20 : 126,786,346.80 = 78,813,536.80 : x
  2. Step 2: Convert to fraction form
    84,524,231.20/126,786,346.80 = 78,813,536.80/x
  3. Step 3: Cross multiply
    84,524,231.20x = 126,786,346.80 × 78,813,536.80
  4. Step 4: Simplify right side
    84,524,231.20x = 9,992,480,409,259,362
  5. Step 5: Solve for x
    x = 9,992,480,409,259,362/84,524,231.20
  6. Step 6: Final answer
    x = 118,220,305.20

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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.