Home / 189,715.75-261,804.57-103,672.85

Finding the Fourth Proportional to 189,715.75, 261,804.57 and 103,672.85

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Solution

The fourth proportional to 189,715.75, 261,804.57 and 103,672.85 is: 143,066.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,715.75 : 261,804.57 = 103,672.85 : x
  2. Step 2: Convert to fraction form
    189,715.75/261,804.57 = 103,672.85/x
  3. Step 3: Cross multiply
    189,715.75x = 261,804.57 × 103,672.85
  4. Step 4: Simplify right side
    189,715.75x = 27,142,025,914.92
  5. Step 5: Solve for x
    x = 27,142,025,914.92/189,715.75
  6. Step 6: Final answer
    x = 143,066.80

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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.