Finding the Fourth Proportional to 139,623,458.40, 209,435,187.60 and 124,557,106.05
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Solution
The fourth proportional to 139,623,458.40, 209,435,187.60 and 124,557,106.05 is: 186,835,659.08
Step by Step Solution
- Step 1: Write the proportion equation
139,623,458.40 : 209,435,187.60 = 124,557,106.05 : x - Step 2: Convert to fraction form
139,623,458.40/209,435,187.60 = 124,557,106.05/x - Step 3: Cross multiply
139,623,458.40x = 209,435,187.60 × 124,557,106.05 - Step 4: Simplify right side
139,623,458.40x = 26,086,640,872,494,844 - Step 5: Solve for x
x = 26,086,640,872,494,844/139,623,458.40 - Step 6: Final answer
x = 186,835,659.08
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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.