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Finding the Fourth Proportional to 122,074.40, 183,111.60 and 121,296.80

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Solution

The fourth proportional to 122,074.40, 183,111.60 and 121,296.80 is: 181,945.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,074.40 : 183,111.60 = 121,296.80 : x
  2. Step 2: Convert to fraction form
    122,074.40/183,111.60 = 121,296.80/x
  3. Step 3: Cross multiply
    122,074.40x = 183,111.60 × 121,296.80
  4. Step 4: Simplify right side
    122,074.40x = 22,210,851,122.88
  5. Step 5: Solve for x
    x = 22,210,851,122.88/122,074.40
  6. Step 6: Final answer
    x = 181,945.20

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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.