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Finding the Fourth Proportional to 117,893.80, 162,688.12 and 64,177.44

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Solution

The fourth proportional to 117,893.80, 162,688.12 and 64,177.44 is: 88,561.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,893.80 : 162,688.12 = 64,177.44 : x
  2. Step 2: Convert to fraction form
    117,893.80/162,688.12 = 64,177.44/x
  3. Step 3: Cross multiply
    117,893.80x = 162,688.12 × 64,177.44
  4. Step 4: Simplify right side
    117,893.80x = 10,440,907,060.01
  5. Step 5: Solve for x
    x = 10,440,907,060.01/117,893.80
  6. Step 6: Final answer
    x = 88,561.97

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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.