Home / 127,818,997.60-191,728,496.40-81,902,495.20

Finding the Fourth Proportional to 127,818,997.60, 191,728,496.40 and 81,902,495.20

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Solution

The fourth proportional to 127,818,997.60, 191,728,496.40 and 81,902,495.20 is: 122,853,742.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,818,997.60 : 191,728,496.40 = 81,902,495.20 : x
  2. Step 2: Convert to fraction form
    127,818,997.60/191,728,496.40 = 81,902,495.20/x
  3. Step 3: Cross multiply
    127,818,997.60x = 191,728,496.40 × 81,902,495.20
  4. Step 4: Simplify right side
    127,818,997.60x = 15,703,042,256,104,218
  5. Step 5: Solve for x
    x = 15,703,042,256,104,218/127,818,997.60
  6. Step 6: Final answer
    x = 122,853,742.80

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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.