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Finding the Fourth Proportional to 189,040.56, 260,876.88 and 104,157.42

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Solution

The fourth proportional to 189,040.56, 260,876.88 and 104,157.42 is: 143,737.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,040.56 : 260,876.88 = 104,157.42 : x
  2. Step 2: Convert to fraction form
    189,040.56/260,876.88 = 104,157.42/x
  3. Step 3: Cross multiply
    189,040.56x = 260,876.88 × 104,157.42
  4. Step 4: Simplify right side
    189,040.56x = 27,172,262,758.45
  5. Step 5: Solve for x
    x = 27,172,262,758.45/189,040.56
  6. Step 6: Final answer
    x = 143,737.74

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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.