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Finding the Fourth Proportional to 121,879.77, 182,820.21 and 31,922.29

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Solution

The fourth proportional to 121,879.77, 182,820.21 and 31,922.29 is: 47,883.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,879.77 : 182,820.21 = 31,922.29 : x
  2. Step 2: Convert to fraction form
    121,879.77/182,820.21 = 31,922.29/x
  3. Step 3: Cross multiply
    121,879.77x = 182,820.21 × 31,922.29
  4. Step 4: Simplify right side
    121,879.77x = 5,836,039,761.48
  5. Step 5: Solve for x
    x = 5,836,039,761.48/121,879.77
  6. Step 6: Final answer
    x = 47,883.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.