Home / 139,969,893.80-209,954,840.70-126,365,004.20

Finding the Fourth Proportional to 139,969,893.80, 209,954,840.70 and 126,365,004.20

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Solution

The fourth proportional to 139,969,893.80, 209,954,840.70 and 126,365,004.20 is: 189,547,506.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,893.80 : 209,954,840.70 = 126,365,004.20 : x
  2. Step 2: Convert to fraction form
    139,969,893.80/209,954,840.70 = 126,365,004.20/x
  3. Step 3: Cross multiply
    139,969,893.80x = 209,954,840.70 × 126,365,004.20
  4. Step 4: Simplify right side
    139,969,893.80x = 26,530,944,326,865,832
  5. Step 5: Solve for x
    x = 26,530,944,326,865,832/139,969,893.80
  6. Step 6: Final answer
    x = 189,547,506.30

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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.