Home / 99,857,249.60-149,785,874.40-81,717,396.80

Finding the Fourth Proportional to 99,857,249.60, 149,785,874.40 and 81,717,396.80

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Solution

The fourth proportional to 99,857,249.60, 149,785,874.40 and 81,717,396.80 is: 122,576,095.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,857,249.60 : 149,785,874.40 = 81,717,396.80 : x
  2. Step 2: Convert to fraction form
    99,857,249.60/149,785,874.40 = 81,717,396.80/x
  3. Step 3: Cross multiply
    99,857,249.60x = 149,785,874.40 × 81,717,396.80
  4. Step 4: Simplify right side
    99,857,249.60x = 12,240,111,733,379,762
  5. Step 5: Solve for x
    x = 12,240,111,733,379,762/99,857,249.60
  6. Step 6: Final answer
    x = 122,576,095.20

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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.