Home / 139,918.39-193,094.23-78,683.85

Finding the Fourth Proportional to 139,918.39, 193,094.23 and 78,683.85

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Solution

The fourth proportional to 139,918.39, 193,094.23 and 78,683.85 is: 108,587.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,918.39 : 193,094.23 = 78,683.85 : x
  2. Step 2: Convert to fraction form
    139,918.39/193,094.23 = 78,683.85/x
  3. Step 3: Cross multiply
    139,918.39x = 193,094.23 × 78,683.85
  4. Step 4: Simplify right side
    139,918.39x = 15,193,397,035.77
  5. Step 5: Solve for x
    x = 15,193,397,035.77/139,918.39
  6. Step 6: Final answer
    x = 108,587.56

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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.