Home / 129,307,729.20-194,056,072.20-91,043,977.20

Finding the Fourth Proportional to 129,307,729.20, 194,056,072.20 and 91,043,977.20

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Solution

The fourth proportional to 129,307,729.20, 194,056,072.20 and 91,043,977.20 is: 136,632,486.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,307,729.20 : 194,056,072.20 = 91,043,977.20 : x
  2. Step 2: Convert to fraction form
    129,307,729.20/194,056,072.20 = 91,043,977.20/x
  3. Step 3: Cross multiply
    129,307,729.20x = 194,056,072.20 × 91,043,977.20
  4. Step 4: Simplify right side
    129,307,729.20x = 17,667,636,612,898,354
  5. Step 5: Solve for x
    x = 17,667,636,612,898,354/129,307,729.20
  6. Step 6: Final answer
    x = 136,632,486.88

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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.