Home / 120,376.08-166,119.21-66,665.34

Finding the Fourth Proportional to 120,376.08, 166,119.21 and 66,665.34

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Solution

The fourth proportional to 120,376.08, 166,119.21 and 66,665.34 is: 91,998.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,376.08 : 166,119.21 = 66,665.34 : x
  2. Step 2: Convert to fraction form
    120,376.08/166,119.21 = 66,665.34/x
  3. Step 3: Cross multiply
    120,376.08x = 166,119.21 × 66,665.34
  4. Step 4: Simplify right side
    120,376.08x = 11,074,393,615.18
  5. Step 5: Solve for x
    x = 11,074,393,615.18/120,376.08
  6. Step 6: Final answer
    x = 91,998.29

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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.