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Finding the Fourth Proportional to 122,120.97, 183,207.78 and 37,879.47

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Solution

The fourth proportional to 122,120.97, 183,207.78 and 37,879.47 is: 56,827.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,120.97 : 183,207.78 = 37,879.47 : x
  2. Step 2: Convert to fraction form
    122,120.97/183,207.78 = 37,879.47/x
  3. Step 3: Cross multiply
    122,120.97x = 183,207.78 × 37,879.47
  4. Step 4: Simplify right side
    122,120.97x = 6,939,813,606.28
  5. Step 5: Solve for x
    x = 6,939,813,606.28/122,120.97
  6. Step 6: Final answer
    x = 56,827.37

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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.