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Finding the Fourth Proportional to 118,994.36, 163,896.90 and 88,682.72

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Solution

The fourth proportional to 118,994.36, 163,896.90 and 88,682.72 is: 122,147.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,994.36 : 163,896.90 = 88,682.72 : x
  2. Step 2: Convert to fraction form
    118,994.36/163,896.90 = 88,682.72/x
  3. Step 3: Cross multiply
    118,994.36x = 163,896.90 × 88,682.72
  4. Step 4: Simplify right side
    118,994.36x = 14,534,822,891.57
  5. Step 5: Solve for x
    x = 14,534,822,891.57/118,994.36
  6. Step 6: Final answer
    x = 122,147.16

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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.