Finding the Fourth Proportional to 158,533.63, 218,770.61 and 86,912.08
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Solution
The fourth proportional to 158,533.63, 218,770.61 and 86,912.08 is: 119,935.49
Step by Step Solution
- Step 1: Write the proportion equation
158,533.63 : 218,770.61 = 86,912.08 : x - Step 2: Convert to fraction form
158,533.63/218,770.61 = 86,912.08/x - Step 3: Cross multiply
158,533.63x = 218,770.61 × 86,912.08 - Step 4: Simplify right side
158,533.63x = 19,013,807,776.48 - Step 5: Solve for x
x = 19,013,807,776.48/158,533.63 - Step 6: Final answer
x = 119,935.49
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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.