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Finding the Fourth Proportional to 189,087.21, 260,940.42 and 103,046.22

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Solution

The fourth proportional to 189,087.21, 260,940.42 and 103,046.22 is: 142,203.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,087.21 : 260,940.42 = 103,046.22 : x
  2. Step 2: Convert to fraction form
    189,087.21/260,940.42 = 103,046.22/x
  3. Step 3: Cross multiply
    189,087.21x = 260,940.42 × 103,046.22
  4. Step 4: Simplify right side
    189,087.21x = 26,888,923,926.21
  5. Step 5: Solve for x
    x = 26,888,923,926.21/189,087.21
  6. Step 6: Final answer
    x = 142,203.82

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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.