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Finding the Fourth Proportional to 111,201.40, 166,802.10 and 55,019.80

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Solution

The fourth proportional to 111,201.40, 166,802.10 and 55,019.80 is: 82,529.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,201.40 : 166,802.10 = 55,019.80 : x
  2. Step 2: Convert to fraction form
    111,201.40/166,802.10 = 55,019.80/x
  3. Step 3: Cross multiply
    111,201.40x = 166,802.10 × 55,019.80
  4. Step 4: Simplify right side
    111,201.40x = 9,177,418,181.58
  5. Step 5: Solve for x
    x = 9,177,418,181.58/111,201.40
  6. Step 6: Final answer
    x = 82,529.70

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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.