Home / 120,420.51-166,181.61-66,706.39

Finding the Fourth Proportional to 120,420.51, 166,181.61 and 66,706.39

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Solution

The fourth proportional to 120,420.51, 166,181.61 and 66,706.39 is: 92,055.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,420.51 : 166,181.61 = 66,706.39 : x
  2. Step 2: Convert to fraction form
    120,420.51/166,181.61 = 66,706.39/x
  3. Step 3: Cross multiply
    120,420.51x = 166,181.61 × 66,706.39
  4. Step 4: Simplify right side
    120,420.51x = 11,085,375,287.49
  5. Step 5: Solve for x
    x = 11,085,375,287.49/120,420.51
  6. Step 6: Final answer
    x = 92,055.54

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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.