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Finding the Fourth Proportional to 189,166.46, 261,051.53 and 104,286.56

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Solution

The fourth proportional to 189,166.46, 261,051.53 and 104,286.56 is: 143,916.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,166.46 : 261,051.53 = 104,286.56 : x
  2. Step 2: Convert to fraction form
    189,166.46/261,051.53 = 104,286.56/x
  3. Step 3: Cross multiply
    189,166.46x = 261,051.53 × 104,286.56
  4. Step 4: Simplify right side
    189,166.46x = 27,224,164,219.75
  5. Step 5: Solve for x
    x = 27,224,164,219.75/189,166.46
  6. Step 6: Final answer
    x = 143,916.45

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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.