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Finding the Fourth Proportional to 111,713.98, 154,161.39 and 61,412.62

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Solution

The fourth proportional to 111,713.98, 154,161.39 and 61,412.62 is: 84,747.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,713.98 : 154,161.39 = 61,412.62 : x
  2. Step 2: Convert to fraction form
    111,713.98/154,161.39 = 61,412.62/x
  3. Step 3: Cross multiply
    111,713.98x = 154,161.39 × 61,412.62
  4. Step 4: Simplify right side
    111,713.98x = 9,467,454,862.74
  5. Step 5: Solve for x
    x = 9,467,454,862.74/111,713.98
  6. Step 6: Final answer
    x = 84,747.27

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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.