Finding the Fourth Proportional to 118,450,975.43, 163,503,440.30 and 81,403,892.75
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Solution
The fourth proportional to 118,450,975.43, 163,503,440.30 and 81,403,892.75 is: 112,365,613.45
Step by Step Solution
- Step 1: Write the proportion equation
118,450,975.43 : 163,503,440.30 = 81,403,892.75 : x - Step 2: Convert to fraction form
118,450,975.43/163,503,440.30 = 81,403,892.75/x - Step 3: Cross multiply
118,450,975.43x = 163,503,440.30 × 81,403,892.75 - Step 4: Simplify right side
118,450,975.43x = 13,309,816,518,030,208 - Step 5: Solve for x
x = 13,309,816,518,030,208/118,450,975.43 - Step 6: Final answer
x = 112,365,613.45
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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.