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Finding the Fourth Proportional to 104,161.76, 143,745.60 and 61,153.46

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Solution

The fourth proportional to 104,161.76, 143,745.60 and 61,153.46 is: 84,393.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,161.76 : 143,745.60 = 61,153.46 : x
  2. Step 2: Convert to fraction form
    104,161.76/143,745.60 = 61,153.46/x
  3. Step 3: Cross multiply
    104,161.76x = 143,745.60 × 61,153.46
  4. Step 4: Simplify right side
    104,161.76x = 8,790,540,799.78
  5. Step 5: Solve for x
    x = 8,790,540,799.78/104,161.76
  6. Step 6: Final answer
    x = 84,393.17

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1.5x scale

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.