Finding the Fourth Proportional to 143,235,611,657.09, 197,665,758,611.36 and 78,131,457,727.61
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Solution
The fourth proportional to 143,235,611,657.09, 197,665,758,611.36 and 78,131,457,727.61 is: 107,821,746,871.95
Step by Step Solution
- Step 1: Write the proportion equation
143,235,611,657.09 : 197,665,758,611.36 = 78,131,457,727.61 : x - Step 2: Convert to fraction form
143,235,611,657.09/197,665,758,611.36 = 78,131,457,727.61/x - Step 3: Cross multiply
143,235,611,657.09x = 197,665,758,611.36 × 78,131,457,727.61 - Step 4: Simplify right side
143,235,611,657.09x = 15,443,913,863,139,434,692,608 - Step 5: Solve for x
x = 15,443,913,863,139,434,692,608/143,235,611,657.09 - Step 6: Final answer
x = 107,821,746,871.95
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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.