Home / 85,000,195.20-127,531,785.60-81,850,915.20

Finding the Fourth Proportional to 85,000,195.20, 127,531,785.60 and 81,850,915.20

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Solution

The fourth proportional to 85,000,195.20, 127,531,785.60 and 81,850,915.20 is: 122,806,698.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,000,195.20 : 127,531,785.60 = 81,850,915.20 : x
  2. Step 2: Convert to fraction form
    85,000,195.20/127,531,785.60 = 81,850,915.20/x
  3. Step 3: Cross multiply
    85,000,195.20x = 127,531,785.60 × 81,850,915.20
  4. Step 4: Simplify right side
    85,000,195.20x = 10,438,593,368,450,182
  5. Step 5: Solve for x
    x = 10,438,593,368,450,182/85,000,195.20
  6. Step 6: Final answer
    x = 122,806,698.78

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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.