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Finding the Fourth Proportional to 189,222.69, 261,121.73 and 104,339.73

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Solution

The fourth proportional to 189,222.69, 261,121.73 and 104,339.73 is: 143,985.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,222.69 : 261,121.73 = 104,339.73 : x
  2. Step 2: Convert to fraction form
    189,222.69/261,121.73 = 104,339.73/x
  3. Step 3: Cross multiply
    189,222.69x = 261,121.73 × 104,339.73
  4. Step 4: Simplify right side
    189,222.69x = 27,245,370,283.63
  5. Step 5: Solve for x
    x = 27,245,370,283.63/189,222.69
  6. Step 6: Final answer
    x = 143,985.75

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1.5x scale

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.