Home / 143,503,845.36-198,035,253.66-78,313,749.36

Finding the Fourth Proportional to 143,503,845.36, 198,035,253.66 and 78,313,749.36

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Solution

The fourth proportional to 143,503,845.36, 198,035,253.66 and 78,313,749.36 is: 108,072,945.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,503,845.36 : 198,035,253.66 = 78,313,749.36 : x
  2. Step 2: Convert to fraction form
    143,503,845.36/198,035,253.66 = 78,313,749.36/x
  3. Step 3: Cross multiply
    143,503,845.36x = 198,035,253.66 × 78,313,749.36
  4. Step 4: Simplify right side
    143,503,845.36x = 15,508,883,219,573,262
  5. Step 5: Solve for x
    x = 15,508,883,219,573,262/143,503,845.36
  6. Step 6: Final answer
    x = 108,072,945.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.