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Finding the Fourth Proportional to 111,749.22, 154,213.93 and 61,448.22

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Solution

The fourth proportional to 111,749.22, 154,213.93 and 61,448.22 is: 84,798.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,749.22 : 154,213.93 = 61,448.22 : x
  2. Step 2: Convert to fraction form
    111,749.22/154,213.93 = 61,448.22/x
  3. Step 3: Cross multiply
    111,749.22x = 154,213.93 × 61,448.22
  4. Step 4: Simplify right side
    111,749.22x = 9,476,171,497.70
  5. Step 5: Solve for x
    x = 9,476,171,497.70/111,749.22
  6. Step 6: Final answer
    x = 84,798.55

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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.