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Finding the Fourth Proportional to 111,800, 154,284.48 and 61,502.72

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Solution

The fourth proportional to 111,800, 154,284.48 and 61,502.72 is: 84,874.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,800 : 154,284.48 = 61,502.72 : x
  2. Step 2: Convert to fraction form
    111,800/154,284.48 = 61,502.72/x
  3. Step 3: Cross multiply
    111,800x = 154,284.48 × 61,502.72
  4. Step 4: Simplify right side
    111,800x = 9,488,915,173.79
  5. Step 5: Solve for x
    x = 9,488,915,173.79/111,800
  6. Step 6: Final answer
    x = 84,874.02

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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.