Finding the Fourth Proportional to 118,389,821.12, 163,368,863.36 and 71,973,632.96
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Solution
The fourth proportional to 118,389,821.12, 163,368,863.36 and 71,973,632.96 is: 99,318,087.46
Step by Step Solution
- Step 1: Write the proportion equation
118,389,821.12 : 163,368,863.36 = 71,973,632.96 : x - Step 2: Convert to fraction form
118,389,821.12/163,368,863.36 = 71,973,632.96/x - Step 3: Cross multiply
118,389,821.12x = 163,368,863.36 × 71,973,632.96 - Step 4: Simplify right side
118,389,821.12x = 11,758,250,608,565,032 - Step 5: Solve for x
x = 11,758,250,608,565,032/118,389,821.12 - Step 6: Final answer
x = 99,318,087.46
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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.