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Finding the Fourth Proportional to 189,393.12, 261,360 and 104,508

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Solution

The fourth proportional to 189,393.12, 261,360 and 104,508 is: 144,219.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,393.12 : 261,360 = 104,508 : x
  2. Step 2: Convert to fraction form
    189,393.12/261,360 = 104,508/x
  3. Step 3: Cross multiply
    189,393.12x = 261,360 × 104,508
  4. Step 4: Simplify right side
    189,393.12x = 27,314,210,880
  5. Step 5: Solve for x
    x = 27,314,210,880/189,393.12
  6. Step 6: Final answer
    x = 144,219.66

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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.