Finding the Fourth Proportional to 139,721,067.36, 208,599,191.10 and 106,759,128.24
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Solution
The fourth proportional to 139,721,067.36, 208,599,191.10 and 106,759,128.24 is: 159,388,045.15
Step by Step Solution
- Step 1: Write the proportion equation
139,721,067.36 : 208,599,191.10 = 106,759,128.24 : x - Step 2: Convert to fraction form
139,721,067.36/208,599,191.10 = 106,759,128.24/x - Step 3: Cross multiply
139,721,067.36x = 208,599,191.10 × 106,759,128.24 - Step 4: Simplify right side
139,721,067.36x = 22,269,867,793,405,164 - Step 5: Solve for x
x = 22,269,867,793,405,164/139,721,067.36 - Step 6: Final answer
x = 159,388,045.15
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.