Finding the Fourth Proportional to 138,411,728.75, 190,918,184.99 and 88,773,478.59
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Solution
The fourth proportional to 138,411,728.75, 190,918,184.99 and 88,773,478.59 is: 122,449,676.49
Step by Step Solution
- Step 1: Write the proportion equation
138,411,728.75 : 190,918,184.99 = 88,773,478.59 : x - Step 2: Convert to fraction form
138,411,728.75/190,918,184.99 = 88,773,478.59/x - Step 3: Cross multiply
138,411,728.75x = 190,918,184.99 × 88,773,478.59 - Step 4: Simplify right side
138,411,728.75x = 16,948,471,407,207,558 - Step 5: Solve for x
x = 16,948,471,407,207,558/138,411,728.75 - Step 6: Final answer
x = 122,449,676.49
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.