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Finding the Fourth Proportional to 111,753, 167,242.75 and 69,040.89

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Solution

The fourth proportional to 111,753, 167,242.75 and 69,040.89 is: 103,322.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,753 : 167,242.75 = 69,040.89 : x
  2. Step 2: Convert to fraction form
    111,753/167,242.75 = 69,040.89/x
  3. Step 3: Cross multiply
    111,753x = 167,242.75 × 69,040.89
  4. Step 4: Simplify right side
    111,753x = 11,546,588,133.45
  5. Step 5: Solve for x
    x = 11,546,588,133.45/111,753
  6. Step 6: Final answer
    x = 103,322.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.