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Finding the Fourth Proportional to 139,659.03, 192,729.51 and 75,996.68

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Solution

The fourth proportional to 139,659.03, 192,729.51 and 75,996.68 is: 104,875.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,659.03 : 192,729.51 = 75,996.68 : x
  2. Step 2: Convert to fraction form
    139,659.03/192,729.51 = 75,996.68/x
  3. Step 3: Cross multiply
    139,659.03x = 192,729.51 × 75,996.68
  4. Step 4: Simplify right side
    139,659.03x = 14,646,801,934.38
  5. Step 5: Solve for x
    x = 14,646,801,934.38/139,659.03
  6. Step 6: Final answer
    x = 104,875.44

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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.