Finding the Fourth Proportional to 128,896,099,279.93, 177,868,602,344.77 and 71,021,240,361.21
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Solution
The fourth proportional to 128,896,099,279.93, 177,868,602,344.77 and 71,021,240,361.21 is: 98,004,895,651.69
Step by Step Solution
- Step 1: Write the proportion equation
128,896,099,279.93 : 177,868,602,344.77 = 71,021,240,361.21 : x - Step 2: Convert to fraction form
128,896,099,279.93/177,868,602,344.77 = 71,021,240,361.21/x - Step 3: Cross multiply
128,896,099,279.93x = 177,868,602,344.77 × 71,021,240,361.21 - Step 4: Simplify right side
128,896,099,279.93x = 12,632,448,759,839,500,271,616 - Step 5: Solve for x
x = 12,632,448,759,839,500,271,616/128,896,099,279.93 - Step 6: Final answer
x = 98,004,895,651.69
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1.5x scale
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.