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Finding the Fourth Proportional to 189,958.32, 262,028.25 and 125,428.14

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Solution

The fourth proportional to 189,958.32, 262,028.25 and 125,428.14 is: 173,015.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,958.32 : 262,028.25 = 125,428.14 : x
  2. Step 2: Convert to fraction form
    189,958.32/262,028.25 = 125,428.14/x
  3. Step 3: Cross multiply
    189,958.32x = 262,028.25 × 125,428.14
  4. Step 4: Simplify right side
    189,958.32x = 32,865,716,024.96
  5. Step 5: Solve for x
    x = 32,865,716,024.96/189,958.32
  6. Step 6: Final answer
    x = 173,015.41

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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.