Home / 120,487.69-166,270.62-66,771.60

Finding the Fourth Proportional to 120,487.69, 166,270.62 and 66,771.60

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Solution

The fourth proportional to 120,487.69, 166,270.62 and 66,771.60 is: 92,143.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,487.69 : 166,270.62 = 66,771.60 : x
  2. Step 2: Convert to fraction form
    120,487.69/166,270.62 = 66,771.60/x
  3. Step 3: Cross multiply
    120,487.69x = 166,270.62 × 66,771.60
  4. Step 4: Simplify right side
    120,487.69x = 11,102,155,330.39
  5. Step 5: Solve for x
    x = 11,102,155,330.39/120,487.69
  6. Step 6: Final answer
    x = 92,143.48

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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.