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Finding the Fourth Proportional to 139,195.75, 192,090.65 and 75,533.54

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Solution

The fourth proportional to 139,195.75, 192,090.65 and 75,533.54 is: 104,236.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,195.75 : 192,090.65 = 75,533.54 : x
  2. Step 2: Convert to fraction form
    139,195.75/192,090.65 = 75,533.54/x
  3. Step 3: Cross multiply
    139,195.75x = 192,090.65 × 75,533.54
  4. Step 4: Simplify right side
    139,195.75x = 14,509,286,897.96
  5. Step 5: Solve for x
    x = 14,509,286,897.96/139,195.75
  6. Step 6: Final answer
    x = 104,236.57

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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.