Home / 128,203,670.30-192,305,505.45-115,438,588.70

Finding the Fourth Proportional to 128,203,670.30, 192,305,505.45 and 115,438,588.70

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Solution

The fourth proportional to 128,203,670.30, 192,305,505.45 and 115,438,588.70 is: 173,157,883.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,203,670.30 : 192,305,505.45 = 115,438,588.70 : x
  2. Step 2: Convert to fraction form
    128,203,670.30/192,305,505.45 = 115,438,588.70/x
  3. Step 3: Cross multiply
    128,203,670.30x = 192,305,505.45 × 115,438,588.70
  4. Step 4: Simplify right side
    128,203,670.30x = 22,199,476,148,388,156
  5. Step 5: Solve for x
    x = 22,199,476,148,388,156/128,203,670.30
  6. Step 6: Final answer
    x = 173,157,883.05

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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.