Finding the Fourth Proportional to 128,387,993,569.14, 192,414,461,263.02 and 71,725,567,812.63
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Solution
The fourth proportional to 128,387,993,569.14, 192,414,461,263.02 and 71,725,567,812.63 is: 107,494,759,484.81
Step by Step Solution
- Step 1: Write the proportion equation
128,387,993,569.14 : 192,414,461,263.02 = 71,725,567,812.63 : x - Step 2: Convert to fraction form
128,387,993,569.14/192,414,461,263.02 = 71,725,567,812.63/x - Step 3: Cross multiply
128,387,993,569.14x = 192,414,461,263.02 × 71,725,567,812.63 - Step 4: Simplify right side
128,387,993,569.14x = 13,801,036,489,451,410,292,736 - Step 5: Solve for x
x = 13,801,036,489,451,410,292,736/128,387,993,569.14 - Step 6: Final answer
x = 107,494,759,484.81
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1.5x scale
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.