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Finding the Fourth Proportional to 139,349.53, 192,333.03 and 91,607.32

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Solution

The fourth proportional to 139,349.53, 192,333.03 and 91,607.32 is: 126,438.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,349.53 : 192,333.03 = 91,607.32 : x
  2. Step 2: Convert to fraction form
    139,349.53/192,333.03 = 91,607.32/x
  3. Step 3: Cross multiply
    139,349.53x = 192,333.03 × 91,607.32
  4. Step 4: Simplify right side
    139,349.53x = 17,619,112,464.11
  5. Step 5: Solve for x
    x = 17,619,112,464.11/139,349.53
  6. Step 6: Final answer
    x = 126,438.27

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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.