Home / 129,446,814.40-194,170,221.60-78,651,908.80

Finding the Fourth Proportional to 129,446,814.40, 194,170,221.60 and 78,651,908.80

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Solution

The fourth proportional to 129,446,814.40, 194,170,221.60 and 78,651,908.80 is: 117,977,863.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,446,814.40 : 194,170,221.60 = 78,651,908.80 : x
  2. Step 2: Convert to fraction form
    129,446,814.40/194,170,221.60 = 78,651,908.80/x
  3. Step 3: Cross multiply
    129,446,814.40x = 194,170,221.60 × 78,651,908.80
  4. Step 4: Simplify right side
    129,446,814.40x = 15,271,858,560,958,990
  5. Step 5: Solve for x
    x = 15,271,858,560,958,990/129,446,814.40
  6. Step 6: Final answer
    x = 117,977,863.20

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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.