Finding the Fourth Proportional to 128,991,161.36, 178,007,803.56 and 71,044,409.36
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Solution
The fourth proportional to 128,991,161.36, 178,007,803.56 and 71,044,409.36 is: 98,041,285.40
Step by Step Solution
- Step 1: Write the proportion equation
128,991,161.36 : 178,007,803.56 = 71,044,409.36 : x - Step 2: Convert to fraction form
128,991,161.36/178,007,803.56 = 71,044,409.36/x - Step 3: Cross multiply
128,991,161.36x = 178,007,803.56 × 71,044,409.36 - Step 4: Simplify right side
128,991,161.36x = 12,646,459,265,391,106 - Step 5: Solve for x
x = 12,646,459,265,391,106/128,991,161.36 - Step 6: Final answer
x = 98,041,285.40
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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.