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Finding the Fourth Proportional to 122,278.40, 183,417.60 and 84,224.60

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Solution

The fourth proportional to 122,278.40, 183,417.60 and 84,224.60 is: 126,336.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,278.40 : 183,417.60 = 84,224.60 : x
  2. Step 2: Convert to fraction form
    122,278.40/183,417.60 = 84,224.60/x
  3. Step 3: Cross multiply
    122,278.40x = 183,417.60 × 84,224.60
  4. Step 4: Simplify right side
    122,278.40x = 15,448,273,992.96
  5. Step 5: Solve for x
    x = 15,448,273,992.96/122,278.40
  6. Step 6: Final answer
    x = 126,336.90

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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.