Home / 139,304.89-192,231.49-77,211.35

Finding the Fourth Proportional to 139,304.89, 192,231.49 and 77,211.35

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Solution

The fourth proportional to 139,304.89, 192,231.49 and 77,211.35 is: 106,546.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,304.89 : 192,231.49 = 77,211.35 : x
  2. Step 2: Convert to fraction form
    139,304.89/192,231.49 = 77,211.35/x
  3. Step 3: Cross multiply
    139,304.89x = 192,231.49 × 77,211.35
  4. Step 4: Simplify right side
    139,304.89x = 14,842,453,216.09
  5. Step 5: Solve for x
    x = 14,842,453,216.09/139,304.89
  6. Step 6: Final answer
    x = 106,546.53

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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.