Home / 120,342.56-166,074.05-66,628.54

Finding the Fourth Proportional to 120,342.56, 166,074.05 and 66,628.54

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Solution

The fourth proportional to 120,342.56, 166,074.05 and 66,628.54 is: 91,948.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,342.56 : 166,074.05 = 66,628.54 : x
  2. Step 2: Convert to fraction form
    120,342.56/166,074.05 = 66,628.54/x
  3. Step 3: Cross multiply
    120,342.56x = 166,074.05 × 66,628.54
  4. Step 4: Simplify right side
    120,342.56x = 11,065,270,319.87
  5. Step 5: Solve for x
    x = 11,065,270,319.87/120,342.56
  6. Step 6: Final answer
    x = 91,948.10

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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.