Finding the Fourth Proportional to 154,751,381.84, 213,556,905.60 and 85,135,268.72
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Solution
The fourth proportional to 154,751,381.84, 213,556,905.60 and 85,135,268.72 is: 117,486,670.10
Step by Step Solution
- Step 1: Write the proportion equation
154,751,381.84 : 213,556,905.60 = 85,135,268.72 : x - Step 2: Convert to fraction form
154,751,381.84/213,556,905.60 = 85,135,268.72/x - Step 3: Cross multiply
154,751,381.84x = 213,556,905.60 × 85,135,268.72 - Step 4: Simplify right side
154,751,381.84x = 18,181,224,545,267,672 - Step 5: Solve for x
x = 18,181,224,545,267,672/154,751,381.84 - Step 6: Final answer
x = 117,486,670.10
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.