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Finding the Fourth Proportional to 169,143.64, 253,798.82 and 79,192.43

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Solution

The fourth proportional to 169,143.64, 253,798.82 and 79,192.43 is: 118,827.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,143.64 : 253,798.82 = 79,192.43 : x
  2. Step 2: Convert to fraction form
    169,143.64/253,798.82 = 79,192.43/x
  3. Step 3: Cross multiply
    169,143.64x = 253,798.82 × 79,192.43
  4. Step 4: Simplify right side
    169,143.64x = 20,098,945,286.93
  5. Step 5: Solve for x
    x = 20,098,945,286.93/169,143.64
  6. Step 6: Final answer
    x = 118,827.67

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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.