Finding the Fourth Proportional to 128,896,099,406.04, 177,868,602,518.98 and 71,021,240,487.09
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Solution
The fourth proportional to 128,896,099,406.04, 177,868,602,518.98 and 71,021,240,487.09 is: 98,004,895,825.50
Step by Step Solution
- Step 1: Write the proportion equation
128,896,099,406.04 : 177,868,602,518.98 = 71,021,240,487.09 : x - Step 2: Convert to fraction form
128,896,099,406.04/177,868,602,518.98 = 71,021,240,487.09/x - Step 3: Cross multiply
128,896,099,406.04x = 177,868,602,518.98 × 71,021,240,487.09 - Step 4: Simplify right side
128,896,099,406.04x = 12,632,448,794,602,212,687,872 - Step 5: Solve for x
x = 12,632,448,794,602,212,687,872/128,896,099,406.04 - Step 6: Final answer
x = 98,004,895,825.50
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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.