Home / 138,526,852.78-191,083,764.99-91,484,359.12

Finding the Fourth Proportional to 138,526,852.78, 191,083,764.99 and 91,484,359.12

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Solution

The fourth proportional to 138,526,852.78, 191,083,764.99 and 91,484,359.12 is: 126,193,408.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,526,852.78 : 191,083,764.99 = 91,484,359.12 : x
  2. Step 2: Convert to fraction form
    138,526,852.78/191,083,764.99 = 91,484,359.12/x
  3. Step 3: Cross multiply
    138,526,852.78x = 191,083,764.99 × 91,484,359.12
  4. Step 4: Simplify right side
    138,526,852.78x = 17,481,175,778,346,844
  5. Step 5: Solve for x
    x = 17,481,175,778,346,844/138,526,852.78
  6. Step 6: Final answer
    x = 126,193,408.91

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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.