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Finding the Fourth Proportional to 189,592.76, 261,635.82 and 103,551.32

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Solution

The fourth proportional to 189,592.76, 261,635.82 and 103,551.32 is: 142,899.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,592.76 : 261,635.82 = 103,551.32 : x
  2. Step 2: Convert to fraction form
    189,592.76/261,635.82 = 103,551.32/x
  3. Step 3: Cross multiply
    189,592.76x = 261,635.82 × 103,551.32
  4. Step 4: Simplify right side
    189,592.76x = 27,092,734,520.28
  5. Step 5: Solve for x
    x = 27,092,734,520.28/189,592.76
  6. Step 6: Final answer
    x = 142,899.63

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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.