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Finding the Fourth Proportional to 117,881.17, 162,679.69 and 64,169.77

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Solution

The fourth proportional to 117,881.17, 162,679.69 and 64,169.77 is: 88,556.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,881.17 : 162,679.69 = 64,169.77 : x
  2. Step 2: Convert to fraction form
    117,881.17/162,679.69 = 64,169.77/x
  3. Step 3: Cross multiply
    117,881.17x = 162,679.69 × 64,169.77
  4. Step 4: Simplify right side
    117,881.17x = 10,439,117,723.85
  5. Step 5: Solve for x
    x = 10,439,117,723.85/117,881.17
  6. Step 6: Final answer
    x = 88,556.28

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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.