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Finding the Fourth Proportional to 189,427.55, 261,409.48 and 104,544

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Solution

The fourth proportional to 189,427.55, 261,409.48 and 104,544 is: 144,270.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,427.55 : 261,409.48 = 104,544 : x
  2. Step 2: Convert to fraction form
    189,427.55/261,409.48 = 104,544/x
  3. Step 3: Cross multiply
    189,427.55x = 261,409.48 × 104,544
  4. Step 4: Simplify right side
    189,427.55x = 27,328,792,415.76
  5. Step 5: Solve for x
    x = 27,328,792,415.76/189,427.55
  6. Step 6: Final answer
    x = 144,270.42

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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.