Finding the Fourth Proportional to 128,906,506.86, 177,552,110.46 and 99,080,117.63
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Solution
The fourth proportional to 128,906,506.86, 177,552,110.46 and 99,080,117.63 is: 136,470,100.84
Step by Step Solution
- Step 1: Write the proportion equation
128,906,506.86 : 177,552,110.46 = 99,080,117.63 : x - Step 2: Convert to fraction form
128,906,506.86/177,552,110.46 = 99,080,117.63/x - Step 3: Cross multiply
128,906,506.86x = 177,552,110.46 × 99,080,117.63 - Step 4: Simplify right side
128,906,506.86x = 17,591,883,989,980,172 - Step 5: Solve for x
x = 17,591,883,989,980,172/128,906,506.86 - Step 6: Final answer
x = 136,470,100.84
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.