Home / 138,452,764.78-191,123,645.91-86,267,583.63

Finding the Fourth Proportional to 138,452,764.78, 191,123,645.91 and 86,267,583.63

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Solution

The fourth proportional to 138,452,764.78, 191,123,645.91 and 86,267,583.63 is: 119,085,921.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,452,764.78 : 191,123,645.91 = 86,267,583.63 : x
  2. Step 2: Convert to fraction form
    138,452,764.78/191,123,645.91 = 86,267,583.63/x
  3. Step 3: Cross multiply
    138,452,764.78x = 191,123,645.91 × 86,267,583.63
  4. Step 4: Simplify right side
    138,452,764.78x = 16,487,775,107,131,202
  5. Step 5: Solve for x
    x = 16,487,775,107,131,202/138,452,764.78
  6. Step 6: Final answer
    x = 119,085,921.71

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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.