Home / 87,336,043.70-131,004,065.55-78,832,987.70

Finding the Fourth Proportional to 87,336,043.70, 131,004,065.55 and 78,832,987.70

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Solution

The fourth proportional to 87,336,043.70, 131,004,065.55 and 78,832,987.70 is: 118,249,481.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,336,043.70 : 131,004,065.55 = 78,832,987.70 : x
  2. Step 2: Convert to fraction form
    87,336,043.70/131,004,065.55 = 78,832,987.70/x
  3. Step 3: Cross multiply
    87,336,043.70x = 131,004,065.55 × 78,832,987.70
  4. Step 4: Simplify right side
    87,336,043.70x = 10,327,441,888,153,144
  5. Step 5: Solve for x
    x = 10,327,441,888,153,144/87,336,043.70
  6. Step 6: Final answer
    x = 118,249,481.55

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Similar ratio
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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.