Finding the Fourth Proportional to 135,133,121.96, 186,472,105.16 and 78,628,321.94
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Solution
The fourth proportional to 135,133,121.96, 186,472,105.16 and 78,628,321.94 is: 108,500,332.89
Step by Step Solution
- Step 1: Write the proportion equation
135,133,121.96 : 186,472,105.16 = 78,628,321.94 : x - Step 2: Convert to fraction form
135,133,121.96/186,472,105.16 = 78,628,321.94/x - Step 3: Cross multiply
135,133,121.96x = 186,472,105.16 × 78,628,321.94 - Step 4: Simplify right side
135,133,121.96x = 14,661,988,717,073,418 - Step 5: Solve for x
x = 14,661,988,717,073,418/135,133,121.96 - Step 6: Final answer
x = 108,500,332.89
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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.