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Finding the Fourth Proportional to 104,891.40, 144,749.70 and 57,144.60

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Solution

The fourth proportional to 104,891.40, 144,749.70 and 57,144.60 is: 78,859.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,891.40 : 144,749.70 = 57,144.60 : x
  2. Step 2: Convert to fraction form
    104,891.40/144,749.70 = 57,144.60/x
  3. Step 3: Cross multiply
    104,891.40x = 144,749.70 × 57,144.60
  4. Step 4: Simplify right side
    104,891.40x = 8,271,663,706.62
  5. Step 5: Solve for x
    x = 8,271,663,706.62/104,891.40
  6. Step 6: Final answer
    x = 78,859.31

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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.