Home / 122,407.20-183,999.60-115,408.80

Finding the Fourth Proportional to 122,407.20, 183,999.60 and 115,408.80

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Solution

The fourth proportional to 122,407.20, 183,999.60 and 115,408.80 is: 173,479.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,407.20 : 183,999.60 = 115,408.80 : x
  2. Step 2: Convert to fraction form
    122,407.20/183,999.60 = 115,408.80/x
  3. Step 3: Cross multiply
    122,407.20x = 183,999.60 × 115,408.80
  4. Step 4: Simplify right side
    122,407.20x = 21,235,173,036.48
  5. Step 5: Solve for x
    x = 21,235,173,036.48/122,407.20
  6. Step 6: Final answer
    x = 173,479.77

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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.