Home / 139,860.45-193,005.62-76,198.30

Finding the Fourth Proportional to 139,860.45, 193,005.62 and 76,198.30

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Solution

The fourth proportional to 139,860.45, 193,005.62 and 76,198.30 is: 105,152.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,860.45 : 193,005.62 = 76,198.30 : x
  2. Step 2: Convert to fraction form
    139,860.45/193,005.62 = 76,198.30/x
  3. Step 3: Cross multiply
    139,860.45x = 193,005.62 × 76,198.30
  4. Step 4: Simplify right side
    139,860.45x = 14,706,699,556.68
  5. Step 5: Solve for x
    x = 14,706,699,556.68/139,860.45
  6. Step 6: Final answer
    x = 105,152.67

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1.5x scale

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.