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Finding the Fourth Proportional to 122,404.48, 168,895.74 and 82,176.64

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Solution

The fourth proportional to 122,404.48, 168,895.74 and 82,176.64 is: 113,388.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,404.48 : 168,895.74 = 82,176.64 : x
  2. Step 2: Convert to fraction form
    122,404.48/168,895.74 = 82,176.64/x
  3. Step 3: Cross multiply
    122,404.48x = 168,895.74 × 82,176.64
  4. Step 4: Simplify right side
    122,404.48x = 13,879,284,423.51
  5. Step 5: Solve for x
    x = 13,879,284,423.51/122,404.48
  6. Step 6: Final answer
    x = 113,388.70

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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.