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Finding the Fourth Proportional to 122,362.60, 183,610.78 and 47,485.70

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Solution

The fourth proportional to 122,362.60, 183,610.78 and 47,485.70 is: 71,254.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,362.60 : 183,610.78 = 47,485.70 : x
  2. Step 2: Convert to fraction form
    122,362.60/183,610.78 = 47,485.70/x
  3. Step 3: Cross multiply
    122,362.60x = 183,610.78 × 47,485.70
  4. Step 4: Simplify right side
    122,362.60x = 8,718,886,415.85
  5. Step 5: Solve for x
    x = 8,718,886,415.85/122,362.60
  6. Step 6: Final answer
    x = 71,254.50

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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.