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Finding the Fourth Proportional to 104,880.78, 144,735.30 and 57,134.07

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Solution

The fourth proportional to 104,880.78, 144,735.30 and 57,134.07 is: 78,844.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,880.78 : 144,735.30 = 57,134.07 : x
  2. Step 2: Convert to fraction form
    104,880.78/144,735.30 = 57,134.07/x
  3. Step 3: Cross multiply
    104,880.78x = 144,735.30 × 57,134.07
  4. Step 4: Simplify right side
    104,880.78x = 8,269,316,761.67
  5. Step 5: Solve for x
    x = 8,269,316,761.67/104,880.78
  6. Step 6: Final answer
    x = 78,844.92

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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.