Finding the Fourth Proportional to 128,387,993,547.85, 192,414,461,231.08 and 71,725,567,791.36
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Solution
The fourth proportional to 128,387,993,547.85, 192,414,461,231.08 and 71,725,567,791.36 is: 107,494,759,452.91
Step by Step Solution
- Step 1: Write the proportion equation
128,387,993,547.85 : 192,414,461,231.08 = 71,725,567,791.36 : x - Step 2: Convert to fraction form
128,387,993,547.85/192,414,461,231.08 = 71,725,567,791.36/x - Step 3: Cross multiply
128,387,993,547.85x = 192,414,461,231.08 × 71,725,567,791.36 - Step 4: Simplify right side
128,387,993,547.85x = 13,801,036,483,068,415,705,088 - Step 5: Solve for x
x = 13,801,036,483,068,415,705,088/128,387,993,547.85 - Step 6: Final answer
x = 107,494,759,452.91
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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.