Home / 139,621.89-192,675.53-77,530.26

Finding the Fourth Proportional to 139,621.89, 192,675.53 and 77,530.26

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Solution

The fourth proportional to 139,621.89, 192,675.53 and 77,530.26 is: 106,990.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,621.89 : 192,675.53 = 77,530.26 : x
  2. Step 2: Convert to fraction form
    139,621.89/192,675.53 = 77,530.26/x
  3. Step 3: Cross multiply
    139,621.89x = 192,675.53 × 77,530.26
  4. Step 4: Simplify right side
    139,621.89x = 14,938,183,548.89
  5. Step 5: Solve for x
    x = 14,938,183,548.89/139,621.89
  6. Step 6: Final answer
    x = 106,990.27

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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.