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Finding the Fourth Proportional to 104,884.88, 144,740.42 and 57,138.26

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Solution

The fourth proportional to 104,884.88, 144,740.42 and 57,138.26 is: 78,850.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,884.88 : 144,740.42 = 57,138.26 : x
  2. Step 2: Convert to fraction form
    104,884.88/144,740.42 = 57,138.26/x
  3. Step 3: Cross multiply
    104,884.88x = 144,740.42 × 57,138.26
  4. Step 4: Simplify right side
    104,884.88x = 8,270,215,750.47
  5. Step 5: Solve for x
    x = 8,270,215,750.47/104,884.88
  6. Step 6: Final answer
    x = 78,850.41

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1.5x scale

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.