Home / 128,902,337.82-193,351,612.21-31,858,053.77

Finding the Fourth Proportional to 128,902,337.82, 193,351,612.21 and 31,858,053.77

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Solution

The fourth proportional to 128,902,337.82, 193,351,612.21 and 31,858,053.77 is: 47,786,612.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,902,337.82 : 193,351,612.21 = 31,858,053.77 : x
  2. Step 2: Convert to fraction form
    128,902,337.82/193,351,612.21 = 31,858,053.77/x
  3. Step 3: Cross multiply
    128,902,337.82x = 193,351,612.21 × 31,858,053.77
  4. Step 4: Simplify right side
    128,902,337.82x = 6,159,806,058,706,103
  5. Step 5: Solve for x
    x = 6,159,806,058,706,103/128,902,337.82
  6. Step 6: Final answer
    x = 47,786,612.43

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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.