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Finding the Fourth Proportional to 117,752.72, 162,493.80 and 66,768.89

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Solution

The fourth proportional to 117,752.72, 162,493.80 and 66,768.89 is: 92,138.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,752.72 : 162,493.80 = 66,768.89 : x
  2. Step 2: Convert to fraction form
    117,752.72/162,493.80 = 66,768.89/x
  3. Step 3: Cross multiply
    117,752.72x = 162,493.80 × 66,768.89
  4. Step 4: Simplify right side
    117,752.72x = 10,849,530,657.88
  5. Step 5: Solve for x
    x = 10,849,530,657.88/117,752.72
  6. Step 6: Final answer
    x = 92,138.26

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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.