Home / 138,526,491.78-191,083,266.72-91,483,998.66

Finding the Fourth Proportional to 138,526,491.78, 191,083,266.72 and 91,483,998.66

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Solution

The fourth proportional to 138,526,491.78, 191,083,266.72 and 91,483,998.66 is: 126,192,911.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,526,491.78 : 191,083,266.72 = 91,483,998.66 : x
  2. Step 2: Convert to fraction form
    138,526,491.78/191,083,266.72 = 91,483,998.66/x
  3. Step 3: Cross multiply
    138,526,491.78x = 191,083,266.72 × 91,483,998.66
  4. Step 4: Simplify right side
    138,526,491.78x = 17,481,061,316,560,902
  5. Step 5: Solve for x
    x = 17,481,061,316,560,902/138,526,491.78
  6. Step 6: Final answer
    x = 126,192,911.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.