Home / 149,017.83-205,645.57-81,035.54

Finding the Fourth Proportional to 149,017.83, 205,645.57 and 81,035.54

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Solution

The fourth proportional to 149,017.83, 205,645.57 and 81,035.54 is: 111,829.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,017.83 : 205,645.57 = 81,035.54 : x
  2. Step 2: Convert to fraction form
    149,017.83/205,645.57 = 81,035.54/x
  3. Step 3: Cross multiply
    149,017.83x = 205,645.57 × 81,035.54
  4. Step 4: Simplify right side
    149,017.83x = 16,664,599,813.56
  5. Step 5: Solve for x
    x = 16,664,599,813.56/149,017.83
  6. Step 6: Final answer
    x = 111,829.57

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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.