Home / 139,973.78-193,163.71-76,311.58

Finding the Fourth Proportional to 139,973.78, 193,163.71 and 76,311.58

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Solution

The fourth proportional to 139,973.78, 193,163.71 and 76,311.58 is: 105,309.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,973.78 : 193,163.71 = 76,311.58 : x
  2. Step 2: Convert to fraction form
    139,973.78/193,163.71 = 76,311.58/x
  3. Step 3: Cross multiply
    139,973.78x = 193,163.71 × 76,311.58
  4. Step 4: Simplify right side
    139,973.78x = 14,740,627,904.66
  5. Step 5: Solve for x
    x = 14,740,627,904.66/139,973.78
  6. Step 6: Final answer
    x = 105,309.92

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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.