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Finding the Fourth Proportional to 139,008, 191,989.44 and 94,218.24

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Solution

The fourth proportional to 139,008, 191,989.44 and 94,218.24 is: 130,128.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,008 : 191,989.44 = 94,218.24 : x
  2. Step 2: Convert to fraction form
    139,008/191,989.44 = 94,218.24/x
  3. Step 3: Cross multiply
    139,008x = 191,989.44 × 94,218.24
  4. Step 4: Simplify right side
    139,008x = 18,088,907,135.39
  5. Step 5: Solve for x
    x = 18,088,907,135.39/139,008
  6. Step 6: Final answer
    x = 130,128.53

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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.