Home / 139,450.56-192,443.26-75,788.36

Finding the Fourth Proportional to 139,450.56, 192,443.26 and 75,788.36

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Solution

The fourth proportional to 139,450.56, 192,443.26 and 75,788.36 is: 104,588.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,450.56 : 192,443.26 = 75,788.36 : x
  2. Step 2: Convert to fraction form
    139,450.56/192,443.26 = 75,788.36/x
  3. Step 3: Cross multiply
    139,450.56x = 192,443.26 × 75,788.36
  4. Step 4: Simplify right side
    139,450.56x = 14,584,959,068.45
  5. Step 5: Solve for x
    x = 14,584,959,068.45/139,450.56
  6. Step 6: Final answer
    x = 104,588.75

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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.