Home / 86,922,415.20-130,383,622.80-72,892,372.80

Finding the Fourth Proportional to 86,922,415.20, 130,383,622.80 and 72,892,372.80

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Solution

The fourth proportional to 86,922,415.20, 130,383,622.80 and 72,892,372.80 is: 109,338,559.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,922,415.20 : 130,383,622.80 = 72,892,372.80 : x
  2. Step 2: Convert to fraction form
    86,922,415.20/130,383,622.80 = 72,892,372.80/x
  3. Step 3: Cross multiply
    86,922,415.20x = 130,383,622.80 × 72,892,372.80
  4. Step 4: Simplify right side
    86,922,415.20x = 9,503,971,640,152,180
  5. Step 5: Solve for x
    x = 9,503,971,640,152,180/86,922,415.20
  6. Step 6: Final answer
    x = 109,338,559.20

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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.