Home / 121,086,072.40-181,629,108.60-120,330,245.20

Finding the Fourth Proportional to 121,086,072.40, 181,629,108.60 and 120,330,245.20

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Solution

The fourth proportional to 121,086,072.40, 181,629,108.60 and 120,330,245.20 is: 180,495,367.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,086,072.40 : 181,629,108.60 = 120,330,245.20 : x
  2. Step 2: Convert to fraction form
    121,086,072.40/181,629,108.60 = 120,330,245.20/x
  3. Step 3: Cross multiply
    121,086,072.40x = 181,629,108.60 × 120,330,245.20
  4. Step 4: Simplify right side
    121,086,072.40x = 21,855,475,173,295,428
  5. Step 5: Solve for x
    x = 21,855,475,173,295,428/121,086,072.40
  6. Step 6: Final answer
    x = 180,495,367.80

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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.