Home / 120,392.12-166,142.54-66,678.19

Finding the Fourth Proportional to 120,392.12, 166,142.54 and 66,678.19

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Solution

The fourth proportional to 120,392.12, 166,142.54 and 66,678.19 is: 92,016.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,392.12 : 166,142.54 = 66,678.19 : x
  2. Step 2: Convert to fraction form
    120,392.12/166,142.54 = 66,678.19/x
  3. Step 3: Cross multiply
    120,392.12x = 166,142.54 × 66,678.19
  4. Step 4: Simplify right side
    120,392.12x = 11,078,083,600.54
  5. Step 5: Solve for x
    x = 11,078,083,600.54/120,392.12
  6. Step 6: Final answer
    x = 92,016.68

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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.