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Finding the Fourth Proportional to 120,368.56, 166,106.57 and 66,652.43

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Solution

The fourth proportional to 120,368.56, 166,106.57 and 66,652.43 is: 91,979.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,368.56 : 166,106.57 = 66,652.43 : x
  2. Step 2: Convert to fraction form
    120,368.56/166,106.57 = 66,652.43/x
  3. Step 3: Cross multiply
    120,368.56x = 166,106.57 × 66,652.43
  4. Step 4: Simplify right side
    120,368.56x = 11,071,405,698.93
  5. Step 5: Solve for x
    x = 11,071,405,698.93/120,368.56
  6. Step 6: Final answer
    x = 91,979.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.