Home / 139,845.39-193,000.57-85,394.55

Finding the Fourth Proportional to 139,845.39, 193,000.57 and 85,394.55

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Solution

The fourth proportional to 139,845.39, 193,000.57 and 85,394.55 is: 117,852.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,845.39 : 193,000.57 = 85,394.55 : x
  2. Step 2: Convert to fraction form
    139,845.39/193,000.57 = 85,394.55/x
  3. Step 3: Cross multiply
    139,845.39x = 193,000.57 × 85,394.55
  4. Step 4: Simplify right side
    139,845.39x = 16,481,196,824.89
  5. Step 5: Solve for x
    x = 16,481,196,824.89/139,845.39
  6. Step 6: Final answer
    x = 117,852.99

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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.