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Finding the Fourth Proportional to 101,188.54, 139,639.53 and 55,869.34

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Solution

The fourth proportional to 101,188.54, 139,639.53 and 55,869.34 is: 77,099.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,188.54 : 139,639.53 = 55,869.34 : x
  2. Step 2: Convert to fraction form
    101,188.54/139,639.53 = 55,869.34/x
  3. Step 3: Cross multiply
    101,188.54x = 139,639.53 × 55,869.34
  4. Step 4: Simplify right side
    101,188.54x = 7,801,568,099.66
  5. Step 5: Solve for x
    x = 7,801,568,099.66/101,188.54
  6. Step 6: Final answer
    x = 77,099.33

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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.