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Finding the Fourth Proportional to 189,512.76, 261,526 and 104,628

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Solution

The fourth proportional to 189,512.76, 261,526 and 104,628 is: 144,385.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,512.76 : 261,526 = 104,628 : x
  2. Step 2: Convert to fraction form
    189,512.76/261,526 = 104,628/x
  3. Step 3: Cross multiply
    189,512.76x = 261,526 × 104,628
  4. Step 4: Simplify right side
    189,512.76x = 27,362,942,328
  5. Step 5: Solve for x
    x = 27,362,942,328/189,512.76
  6. Step 6: Final answer
    x = 144,385.75

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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.