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Finding the Fourth Proportional to 122,755.80, 184,133.70 and 70,170.60

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Solution

The fourth proportional to 122,755.80, 184,133.70 and 70,170.60 is: 105,255.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,755.80 : 184,133.70 = 70,170.60 : x
  2. Step 2: Convert to fraction form
    122,755.80/184,133.70 = 70,170.60/x
  3. Step 3: Cross multiply
    122,755.80x = 184,133.70 × 70,170.60
  4. Step 4: Simplify right side
    122,755.80x = 12,920,772,209.22
  5. Step 5: Solve for x
    x = 12,920,772,209.22/122,755.80
  6. Step 6: Final answer
    x = 105,255.90

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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.