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Finding the Fourth Proportional to 119,145.77, 178,792.52 and 69,249.36

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Solution

The fourth proportional to 119,145.77, 178,792.52 and 69,249.36 is: 103,916.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,145.77 : 178,792.52 = 69,249.36 : x
  2. Step 2: Convert to fraction form
    119,145.77/178,792.52 = 69,249.36/x
  3. Step 3: Cross multiply
    119,145.77x = 178,792.52 × 69,249.36
  4. Step 4: Simplify right side
    119,145.77x = 12,381,267,582.79
  5. Step 5: Solve for x
    x = 12,381,267,582.79/119,145.77
  6. Step 6: Final answer
    x = 103,916.97

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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.