Home / 117,721.80-162,383.20-102,650.64

Finding the Fourth Proportional to 117,721.80, 162,383.20 and 102,650.64

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Solution

The fourth proportional to 117,721.80, 162,383.20 and 102,650.64 is: 141,594.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,721.80 : 162,383.20 = 102,650.64 : x
  2. Step 2: Convert to fraction form
    117,721.80/162,383.20 = 102,650.64/x
  3. Step 3: Cross multiply
    117,721.80x = 162,383.20 × 102,650.64
  4. Step 4: Simplify right side
    117,721.80x = 16,668,739,405.25
  5. Step 5: Solve for x
    x = 16,668,739,405.25/117,721.80
  6. Step 6: Final answer
    x = 141,594.33

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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.