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Finding the Fourth Proportional to 167,455.35, 250,969.01 and 78,512.67

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Solution

The fourth proportional to 167,455.35, 250,969.01 and 78,512.67 is: 117,668.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,455.35 : 250,969.01 = 78,512.67 : x
  2. Step 2: Convert to fraction form
    167,455.35/250,969.01 = 78,512.67/x
  3. Step 3: Cross multiply
    167,455.35x = 250,969.01 × 78,512.67
  4. Step 4: Simplify right side
    167,455.35x = 19,704,246,669.79
  5. Step 5: Solve for x
    x = 19,704,246,669.79/167,455.35
  6. Step 6: Final answer
    x = 117,668.66

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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.