Home / 138,452,956.80-191,123,910.92-86,267,776.12

Finding the Fourth Proportional to 138,452,956.80, 191,123,910.92 and 86,267,776.12

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Solution

The fourth proportional to 138,452,956.80, 191,123,910.92 and 86,267,776.12 is: 119,086,187.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,452,956.80 : 191,123,910.92 = 86,267,776.12 : x
  2. Step 2: Convert to fraction form
    138,452,956.80/191,123,910.92 = 86,267,776.12/x
  3. Step 3: Cross multiply
    138,452,956.80x = 191,123,910.92 × 86,267,776.12
  4. Step 4: Simplify right side
    138,452,956.80x = 16,487,834,758,425,384
  5. Step 5: Solve for x
    x = 16,487,834,758,425,384/138,452,956.80
  6. Step 6: Final answer
    x = 119,086,187.39

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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.