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Finding the Fourth Proportional to 111,865.56, 154,374.48 and 61,564.56

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Solution

The fourth proportional to 111,865.56, 154,374.48 and 61,564.56 is: 84,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,865.56 : 154,374.48 = 61,564.56 : x
  2. Step 2: Convert to fraction form
    111,865.56/154,374.48 = 61,564.56/x
  3. Step 3: Cross multiply
    111,865.56x = 154,374.48 × 61,564.56
  4. Step 4: Simplify right side
    111,865.56x = 9,503,996,936.43
  5. Step 5: Solve for x
    x = 9,503,996,936.43/111,865.56
  6. Step 6: Final answer
    x = 84,959.10

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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.