Home / 122,620.16-183,930.24-81,057.60

Finding the Fourth Proportional to 122,620.16, 183,930.24 and 81,057.60

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Solution

The fourth proportional to 122,620.16, 183,930.24 and 81,057.60 is: 121,586.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,620.16 : 183,930.24 = 81,057.60 : x
  2. Step 2: Convert to fraction form
    122,620.16/183,930.24 = 81,057.60/x
  3. Step 3: Cross multiply
    122,620.16x = 183,930.24 × 81,057.60
  4. Step 4: Simplify right side
    122,620.16x = 14,908,943,821.82
  5. Step 5: Solve for x
    x = 14,908,943,821.82/122,620.16
  6. Step 6: Final answer
    x = 121,586.40

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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.