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Finding the Fourth Proportional to 189,639.24, 261,679.86 and 104,751.24

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Solution

The fourth proportional to 189,639.24, 261,679.86 and 104,751.24 is: 144,544.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,639.24 : 261,679.86 = 104,751.24 : x
  2. Step 2: Convert to fraction form
    189,639.24/261,679.86 = 104,751.24/x
  3. Step 3: Cross multiply
    189,639.24x = 261,679.86 × 104,751.24
  4. Step 4: Simplify right side
    189,639.24x = 27,411,289,818.03
  5. Step 5: Solve for x
    x = 27,411,289,818.03/189,639.24
  6. Step 6: Final answer
    x = 144,544.40

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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.