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Finding the Fourth Proportional to 139,399.52, 193,358.40 and 134,620.24

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Solution

The fourth proportional to 139,399.52, 193,358.40 and 134,620.24 is: 186,729.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,399.52 : 193,358.40 = 134,620.24 : x
  2. Step 2: Convert to fraction form
    139,399.52/193,358.40 = 134,620.24/x
  3. Step 3: Cross multiply
    139,399.52x = 193,358.40 × 134,620.24
  4. Step 4: Simplify right side
    139,399.52x = 26,029,954,214.02
  5. Step 5: Solve for x
    x = 26,029,954,214.02/139,399.52
  6. Step 6: Final answer
    x = 186,729.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.