Home / 120,346.89-166,078.26-66,628.68

Finding the Fourth Proportional to 120,346.89, 166,078.26 and 66,628.68

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Solution

The fourth proportional to 120,346.89, 166,078.26 and 66,628.68 is: 91,947.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,346.89 : 166,078.26 = 66,628.68 : x
  2. Step 2: Convert to fraction form
    120,346.89/166,078.26 = 66,628.68/x
  3. Step 3: Cross multiply
    120,346.89x = 166,078.26 × 66,628.68
  4. Step 4: Simplify right side
    120,346.89x = 11,065,575,240.50
  5. Step 5: Solve for x
    x = 11,065,575,240.50/120,346.89
  6. Step 6: Final answer
    x = 91,947.33

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1.5x scale

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.