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Finding the Fourth Proportional to 122,221.20, 183,477.60 and 68,955.60

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Solution

The fourth proportional to 122,221.20, 183,477.60 and 68,955.60 is: 103,515.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,221.20 : 183,477.60 = 68,955.60 : x
  2. Step 2: Convert to fraction form
    122,221.20/183,477.60 = 68,955.60/x
  3. Step 3: Cross multiply
    122,221.20x = 183,477.60 × 68,955.60
  4. Step 4: Simplify right side
    122,221.20x = 12,651,807,994.56
  5. Step 5: Solve for x
    x = 12,651,807,994.56/122,221.20
  6. Step 6: Final answer
    x = 103,515.66

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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.