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Finding the Fourth Proportional to 117,868.64, 162,762.48 and 80,232.80

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Solution

The fourth proportional to 117,868.64, 162,762.48 and 80,232.80 is: 110,791.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,868.64 : 162,762.48 = 80,232.80 : x
  2. Step 2: Convert to fraction form
    117,868.64/162,762.48 = 80,232.80/x
  3. Step 3: Cross multiply
    117,868.64x = 162,762.48 × 80,232.80
  4. Step 4: Simplify right side
    117,868.64x = 13,058,889,505.34
  5. Step 5: Solve for x
    x = 13,058,889,505.34/117,868.64
  6. Step 6: Final answer
    x = 110,791.89

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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.