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Finding the Fourth Proportional to 121,161.40, 181,770.90 and 51,004.60

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Solution

The fourth proportional to 121,161.40, 181,770.90 and 51,004.60 is: 76,519.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,161.40 : 181,770.90 = 51,004.60 : x
  2. Step 2: Convert to fraction form
    121,161.40/181,770.90 = 51,004.60/x
  3. Step 3: Cross multiply
    121,161.40x = 181,770.90 × 51,004.60
  4. Step 4: Simplify right side
    121,161.40x = 9,271,152,046.14
  5. Step 5: Solve for x
    x = 9,271,152,046.14/121,161.40
  6. Step 6: Final answer
    x = 76,519.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.