Home / 128,897,998.83-193,345,105.14-31,853,703.78

Finding the Fourth Proportional to 128,897,998.83, 193,345,105.14 and 31,853,703.78

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Solution

The fourth proportional to 128,897,998.83, 193,345,105.14 and 31,853,703.78 is: 47,780,087.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,897,998.83 : 193,345,105.14 = 31,853,703.78 : x
  2. Step 2: Convert to fraction form
    128,897,998.83/193,345,105.14 = 31,853,703.78/x
  3. Step 3: Cross multiply
    128,897,998.83x = 193,345,105.14 × 31,853,703.78
  4. Step 4: Simplify right side
    128,897,998.83x = 6,158,757,706,442,515
  5. Step 5: Solve for x
    x = 6,158,757,706,442,515/128,897,998.83
  6. Step 6: Final answer
    x = 47,780,087.84

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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.