Home / 139,739.54-192,840.51-76,077.32

Finding the Fourth Proportional to 139,739.54, 192,840.51 and 76,077.32

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Solution

The fourth proportional to 139,739.54, 192,840.51 and 76,077.32 is: 104,986.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,739.54 : 192,840.51 = 76,077.32 : x
  2. Step 2: Convert to fraction form
    139,739.54/192,840.51 = 76,077.32/x
  3. Step 3: Cross multiply
    139,739.54x = 192,840.51 × 76,077.32
  4. Step 4: Simplify right side
    139,739.54x = 14,670,789,188.23
  5. Step 5: Solve for x
    x = 14,670,789,188.23/139,739.54
  6. Step 6: Final answer
    x = 104,986.67

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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.