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Finding the Fourth Proportional to 155,422.48, 214,560.48 and 101,789.68

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Solution

The fourth proportional to 155,422.48, 214,560.48 and 101,789.68 is: 140,520.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,422.48 : 214,560.48 = 101,789.68 : x
  2. Step 2: Convert to fraction form
    155,422.48/214,560.48 = 101,789.68/x
  3. Step 3: Cross multiply
    155,422.48x = 214,560.48 × 101,789.68
  4. Step 4: Simplify right side
    155,422.48x = 21,840,042,599.85
  5. Step 5: Solve for x
    x = 21,840,042,599.85/155,422.48
  6. Step 6: Final answer
    x = 140,520.49

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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.