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Finding the Fourth Proportional to 139,598.64, 192,640.56 and 75,936.48

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Solution

The fourth proportional to 139,598.64, 192,640.56 and 75,936.48 is: 104,789.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,598.64 : 192,640.56 = 75,936.48 : x
  2. Step 2: Convert to fraction form
    139,598.64/192,640.56 = 75,936.48/x
  3. Step 3: Cross multiply
    139,598.64x = 192,640.56 × 75,936.48
  4. Step 4: Simplify right side
    139,598.64x = 14,628,446,031.63
  5. Step 5: Solve for x
    x = 14,628,446,031.63/139,598.64
  6. Step 6: Final answer
    x = 104,789.32

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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.