Home / 149,408.02-206,177.05-81,423.53

Finding the Fourth Proportional to 149,408.02, 206,177.05 and 81,423.53

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Solution

The fourth proportional to 149,408.02, 206,177.05 and 81,423.53 is: 112,361.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,408.02 : 206,177.05 = 81,423.53 : x
  2. Step 2: Convert to fraction form
    149,408.02/206,177.05 = 81,423.53/x
  3. Step 3: Cross multiply
    149,408.02x = 206,177.05 × 81,423.53
  4. Step 4: Simplify right side
    149,408.02x = 16,787,663,215.99
  5. Step 5: Solve for x
    x = 16,787,663,215.99/149,408.02
  6. Step 6: Final answer
    x = 112,361.19

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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.