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Finding the Fourth Proportional to 122,440.40, 183,466.20 and 80,838.80

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Solution

The fourth proportional to 122,440.40, 183,466.20 and 80,838.80 is: 121,129.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,440.40 : 183,466.20 = 80,838.80 : x
  2. Step 2: Convert to fraction form
    122,440.40/183,466.20 = 80,838.80/x
  3. Step 3: Cross multiply
    122,440.40x = 183,466.20 × 80,838.80
  4. Step 4: Simplify right side
    122,440.40x = 14,831,187,448.56
  5. Step 5: Solve for x
    x = 14,831,187,448.56/122,440.40
  6. Step 6: Final answer
    x = 121,129.85

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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.