Home / 112,615.72-168,587.04-68,107.84

Finding the Fourth Proportional to 112,615.72, 168,587.04 and 68,107.84

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Solution

The fourth proportional to 112,615.72, 168,587.04 and 68,107.84 is: 101,958.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,615.72 : 168,587.04 = 68,107.84 : x
  2. Step 2: Convert to fraction form
    112,615.72/168,587.04 = 68,107.84/x
  3. Step 3: Cross multiply
    112,615.72x = 168,587.04 × 68,107.84
  4. Step 4: Simplify right side
    112,615.72x = 11,482,099,146.39
  5. Step 5: Solve for x
    x = 11,482,099,146.39/112,615.72
  6. Step 6: Final answer
    x = 101,958.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.