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Finding the Fourth Proportional to 189,437.55, 261,423.27 and 104,554

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Solution

The fourth proportional to 189,437.55, 261,423.27 and 104,554 is: 144,284.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,437.55 : 261,423.27 = 104,554 : x
  2. Step 2: Convert to fraction form
    189,437.55/261,423.27 = 104,554/x
  3. Step 3: Cross multiply
    189,437.55x = 261,423.27 × 104,554
  4. Step 4: Simplify right side
    189,437.55x = 27,332,848,571.58
  5. Step 5: Solve for x
    x = 27,332,848,571.58/189,437.55
  6. Step 6: Final answer
    x = 144,284.22

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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.