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Finding the Fourth Proportional to 122,724.80, 183,957.60 and 70,020.80

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Solution

The fourth proportional to 122,724.80, 183,957.60 and 70,020.80 is: 104,957.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,724.80 : 183,957.60 = 70,020.80 : x
  2. Step 2: Convert to fraction form
    122,724.80/183,957.60 = 70,020.80/x
  3. Step 3: Cross multiply
    122,724.80x = 183,957.60 × 70,020.80
  4. Step 4: Simplify right side
    122,724.80x = 12,880,858,318.08
  5. Step 5: Solve for x
    x = 12,880,858,318.08/122,724.80
  6. Step 6: Final answer
    x = 104,957.26

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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.