Home / 120,511.56-166,315.91-66,813.42

Finding the Fourth Proportional to 120,511.56, 166,315.91 and 66,813.42

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Solution

The fourth proportional to 120,511.56, 166,315.91 and 66,813.42 is: 92,208.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,511.56 : 166,315.91 = 66,813.42 : x
  2. Step 2: Convert to fraction form
    120,511.56/166,315.91 = 66,813.42/x
  3. Step 3: Cross multiply
    120,511.56x = 166,315.91 × 66,813.42
  4. Step 4: Simplify right side
    120,511.56x = 11,112,134,747.51
  5. Step 5: Solve for x
    x = 11,112,134,747.51/120,511.56
  6. Step 6: Final answer
    x = 92,208.04

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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.