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Finding the Fourth Proportional to 100,894.44, 139,233.06 and 55,571.52

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Solution

The fourth proportional to 100,894.44, 139,233.06 and 55,571.52 is: 76,688.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,894.44 : 139,233.06 = 55,571.52 : x
  2. Step 2: Convert to fraction form
    100,894.44/139,233.06 = 55,571.52/x
  3. Step 3: Cross multiply
    100,894.44x = 139,233.06 × 55,571.52
  4. Step 4: Simplify right side
    100,894.44x = 7,737,392,778.45
  5. Step 5: Solve for x
    x = 7,737,392,778.45/100,894.44
  6. Step 6: Final answer
    x = 76,688.00

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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.