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Finding the Fourth Proportional to 129,791.16, 194,571.03 and 69,851.82

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Solution

The fourth proportional to 129,791.16, 194,571.03 and 69,851.82 is: 104,715.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,791.16 : 194,571.03 = 69,851.82 : x
  2. Step 2: Convert to fraction form
    129,791.16/194,571.03 = 69,851.82/x
  3. Step 3: Cross multiply
    129,791.16x = 194,571.03 × 69,851.82
  4. Step 4: Simplify right side
    129,791.16x = 13,591,140,564.77
  5. Step 5: Solve for x
    x = 13,591,140,564.77/129,791.16
  6. Step 6: Final answer
    x = 104,715.46

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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.