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Finding the Fourth Proportional to 189,673.92, 261,747.42 and 104,792.40

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Solution

The fourth proportional to 189,673.92, 261,747.42 and 104,792.40 is: 144,612.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,673.92 : 261,747.42 = 104,792.40 : x
  2. Step 2: Convert to fraction form
    189,673.92/261,747.42 = 104,792.40/x
  3. Step 3: Cross multiply
    189,673.92x = 261,747.42 × 104,792.40
  4. Step 4: Simplify right side
    189,673.92x = 27,429,140,335.61
  5. Step 5: Solve for x
    x = 27,429,140,335.61/189,673.92
  6. Step 6: Final answer
    x = 144,612.08

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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.