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Finding the Fourth Proportional to 122,129.70, 183,203.46 and 37,879.20

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Solution

The fourth proportional to 122,129.70, 183,203.46 and 37,879.20 is: 56,821.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,129.70 : 183,203.46 = 37,879.20 : x
  2. Step 2: Convert to fraction form
    122,129.70/183,203.46 = 37,879.20/x
  3. Step 3: Cross multiply
    122,129.70x = 183,203.46 × 37,879.20
  4. Step 4: Simplify right side
    122,129.70x = 6,939,600,502.03
  5. Step 5: Solve for x
    x = 6,939,600,502.03/122,129.70
  6. Step 6: Final answer
    x = 56,821.56

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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.