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Finding the Fourth Proportional to 119,147.77, 178,795.51 and 69,251.36

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Solution

The fourth proportional to 119,147.77, 178,795.51 and 69,251.36 is: 103,919.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,147.77 : 178,795.51 = 69,251.36 : x
  2. Step 2: Convert to fraction form
    119,147.77/178,795.51 = 69,251.36/x
  3. Step 3: Cross multiply
    119,147.77x = 178,795.51 × 69,251.36
  4. Step 4: Simplify right side
    119,147.77x = 12,381,832,557.55
  5. Step 5: Solve for x
    x = 12,381,832,557.55/119,147.77
  6. Step 6: Final answer
    x = 103,919.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.