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Finding the Fourth Proportional to 111,808.50, 167,289.54 and 66,240.67

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Solution

The fourth proportional to 111,808.50, 167,289.54 and 66,240.67 is: 99,110.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,808.50 : 167,289.54 = 66,240.67 : x
  2. Step 2: Convert to fraction form
    111,808.50/167,289.54 = 66,240.67/x
  3. Step 3: Cross multiply
    111,808.50x = 167,289.54 × 66,240.67
  4. Step 4: Simplify right side
    111,808.50x = 11,081,371,300.61
  5. Step 5: Solve for x
    x = 11,081,371,300.61/111,808.50
  6. Step 6: Final answer
    x = 99,110.28

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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.