Home / 128,717,055,399.98-192,899,064,590.40-81,469,189,663.94

Finding the Fourth Proportional to 128,717,055,399.98, 192,899,064,590.40 and 81,469,189,663.94

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Solution

The fourth proportional to 128,717,055,399.98, 192,899,064,590.40 and 81,469,189,663.94 is: 122,092,060,219.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,717,055,399.98 : 192,899,064,590.40 = 81,469,189,663.94 : x
  2. Step 2: Convert to fraction form
    128,717,055,399.98/192,899,064,590.40 = 81,469,189,663.94/x
  3. Step 3: Cross multiply
    128,717,055,399.98x = 192,899,064,590.40 × 81,469,189,663.94
  4. Step 4: Simplify right side
    128,717,055,399.98x = 15,715,330,479,111,909,933,056
  5. Step 5: Solve for x
    x = 15,715,330,479,111,909,933,056/128,717,055,399.98
  6. Step 6: Final answer
    x = 122,092,060,219.04

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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.