Home / 122,815.60-184,223.40-85,490.80

Finding the Fourth Proportional to 122,815.60, 184,223.40 and 85,490.80

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Solution

The fourth proportional to 122,815.60, 184,223.40 and 85,490.80 is: 128,236.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,815.60 : 184,223.40 = 85,490.80 : x
  2. Step 2: Convert to fraction form
    122,815.60/184,223.40 = 85,490.80/x
  3. Step 3: Cross multiply
    122,815.60x = 184,223.40 × 85,490.80
  4. Step 4: Simplify right side
    122,815.60x = 15,749,405,844.72
  5. Step 5: Solve for x
    x = 15,749,405,844.72/122,815.60
  6. Step 6: Final answer
    x = 128,236.20

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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.