Home / 189,705.75-261,790.77-103,662.85

Finding the Fourth Proportional to 189,705.75, 261,790.77 and 103,662.85

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Solution

The fourth proportional to 189,705.75, 261,790.77 and 103,662.85 is: 143,053.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,705.75 : 261,790.77 = 103,662.85 : x
  2. Step 2: Convert to fraction form
    189,705.75/261,790.77 = 103,662.85/x
  3. Step 3: Cross multiply
    189,705.75x = 261,790.77 × 103,662.85
  4. Step 4: Simplify right side
    189,705.75x = 27,137,977,321.89
  5. Step 5: Solve for x
    x = 27,137,977,321.89/189,705.75
  6. Step 6: Final answer
    x = 143,053.00

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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.