Home / 99,855,429.60-149,783,144.40-81,715,576.80

Finding the Fourth Proportional to 99,855,429.60, 149,783,144.40 and 81,715,576.80

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Solution

The fourth proportional to 99,855,429.60, 149,783,144.40 and 81,715,576.80 is: 122,573,365.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,855,429.60 : 149,783,144.40 = 81,715,576.80 : x
  2. Step 2: Convert to fraction form
    99,855,429.60/149,783,144.40 = 81,715,576.80/x
  3. Step 3: Cross multiply
    99,855,429.60x = 149,783,144.40 × 81,715,576.80
  4. Step 4: Simplify right side
    99,855,429.60x = 12,239,616,039,563,690
  5. Step 5: Solve for x
    x = 12,239,616,039,563,690/99,855,429.60
  6. Step 6: Final answer
    x = 122,573,365.20

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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.