Home / 120,634.40-166,480.93-66,919.45

Finding the Fourth Proportional to 120,634.40, 166,480.93 and 66,919.45

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Solution

The fourth proportional to 120,634.40, 166,480.93 and 66,919.45 is: 92,351.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,634.40 : 166,480.93 = 66,919.45 : x
  2. Step 2: Convert to fraction form
    120,634.40/166,480.93 = 66,919.45/x
  3. Step 3: Cross multiply
    120,634.40x = 166,480.93 × 66,919.45
  4. Step 4: Simplify right side
    120,634.40x = 11,140,812,271.09
  5. Step 5: Solve for x
    x = 11,140,812,271.09/120,634.40
  6. Step 6: Final answer
    x = 92,351.87

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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.