Home / 128,571,425.82-192,861,138.36-61,176,169.50

Finding the Fourth Proportional to 128,571,425.82, 192,861,138.36 and 61,176,169.50

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Solution

The fourth proportional to 128,571,425.82, 192,861,138.36 and 61,176,169.50 is: 91,766,157.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,571,425.82 : 192,861,138.36 = 61,176,169.50 : x
  2. Step 2: Convert to fraction form
    128,571,425.82/192,861,138.36 = 61,176,169.50/x
  3. Step 3: Cross multiply
    128,571,425.82x = 192,861,138.36 × 61,176,169.50
  4. Step 4: Simplify right side
    128,571,425.82x = 11,798,505,690,274,312
  5. Step 5: Solve for x
    x = 11,798,505,690,274,312/128,571,425.82
  6. Step 6: Final answer
    x = 91,766,157.33

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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.