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Finding the Fourth Proportional to 189,673.87, 261,752.70 and 104,792.89

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Solution

The fourth proportional to 189,673.87, 261,752.70 and 104,792.89 is: 144,615.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,673.87 : 261,752.70 = 104,792.89 : x
  2. Step 2: Convert to fraction form
    189,673.87/261,752.70 = 104,792.89/x
  3. Step 3: Cross multiply
    189,673.87x = 261,752.70 × 104,792.89
  4. Step 4: Simplify right side
    189,673.87x = 27,429,821,898.30
  5. Step 5: Solve for x
    x = 27,429,821,898.30/189,673.87
  6. Step 6: Final answer
    x = 144,615.71

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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.