Home / 133,141,664.40-199,712,496.60-81,857,389.20

Finding the Fourth Proportional to 133,141,664.40, 199,712,496.60 and 81,857,389.20

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Solution

The fourth proportional to 133,141,664.40, 199,712,496.60 and 81,857,389.20 is: 122,786,083.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,141,664.40 : 199,712,496.60 = 81,857,389.20 : x
  2. Step 2: Convert to fraction form
    133,141,664.40/199,712,496.60 = 81,857,389.20/x
  3. Step 3: Cross multiply
    133,141,664.40x = 199,712,496.60 × 81,857,389.20
  4. Step 4: Simplify right side
    133,141,664.40x = 16,347,943,562,289,876
  5. Step 5: Solve for x
    x = 16,347,943,562,289,876/133,141,664.40
  6. Step 6: Final answer
    x = 122,786,083.80

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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.