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Finding the Fourth Proportional to 122,256.80, 183,676.80 and 109,426.40

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Solution

The fourth proportional to 122,256.80, 183,676.80 and 109,426.40 is: 164,400.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,256.80 : 183,676.80 = 109,426.40 : x
  2. Step 2: Convert to fraction form
    122,256.80/183,676.80 = 109,426.40/x
  3. Step 3: Cross multiply
    122,256.80x = 183,676.80 × 109,426.40
  4. Step 4: Simplify right side
    122,256.80x = 20,099,090,987.52
  5. Step 5: Solve for x
    x = 20,099,090,987.52/122,256.80
  6. Step 6: Final answer
    x = 164,400.60

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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.