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Finding the Fourth Proportional to 148,682.67, 205,182.31 and 80,699.67

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Solution

The fourth proportional to 148,682.67, 205,182.31 and 80,699.67 is: 111,365.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,682.67 : 205,182.31 = 80,699.67 : x
  2. Step 2: Convert to fraction form
    148,682.67/205,182.31 = 80,699.67/x
  3. Step 3: Cross multiply
    148,682.67x = 205,182.31 × 80,699.67
  4. Step 4: Simplify right side
    148,682.67x = 16,558,144,706.84
  5. Step 5: Solve for x
    x = 16,558,144,706.84/148,682.67
  6. Step 6: Final answer
    x = 111,365.67

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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.