Home / 122,938.40-184,407.60-121,188.80

Finding the Fourth Proportional to 122,938.40, 184,407.60 and 121,188.80

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Solution

The fourth proportional to 122,938.40, 184,407.60 and 121,188.80 is: 181,783.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,938.40 : 184,407.60 = 121,188.80 : x
  2. Step 2: Convert to fraction form
    122,938.40/184,407.60 = 121,188.80/x
  3. Step 3: Cross multiply
    122,938.40x = 184,407.60 × 121,188.80
  4. Step 4: Simplify right side
    122,938.40x = 22,348,135,754.88
  5. Step 5: Solve for x
    x = 22,348,135,754.88/122,938.40
  6. Step 6: Final answer
    x = 181,783.20

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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.