Home / 111,128.12-166,647.26-40,991.80

Finding the Fourth Proportional to 111,128.12, 166,647.26 and 40,991.80

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Solution

The fourth proportional to 111,128.12, 166,647.26 and 40,991.80 is: 61,471.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,128.12 : 166,647.26 = 40,991.80 : x
  2. Step 2: Convert to fraction form
    111,128.12/166,647.26 = 40,991.80/x
  3. Step 3: Cross multiply
    111,128.12x = 166,647.26 × 40,991.80
  4. Step 4: Simplify right side
    111,128.12x = 6,831,171,152.47
  5. Step 5: Solve for x
    x = 6,831,171,152.47/111,128.12
  6. Step 6: Final answer
    x = 61,471.13

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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.