Finding the Fourth Proportional to 112,679.70, 155,497.98 and 62,378.70
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Solution
The fourth proportional to 112,679.70, 155,497.98 and 62,378.70 is: 86,082.60
Step by Step Solution
- Step 1: Write the proportion equation
112,679.70 : 155,497.98 = 62,378.70 : x - Step 2: Convert to fraction form
112,679.70/155,497.98 = 62,378.70/x - Step 3: Cross multiply
112,679.70x = 155,497.98 × 62,378.70 - Step 4: Simplify right side
112,679.70x = 9,699,761,845.03 - Step 5: Solve for x
x = 9,699,761,845.03/112,679.70 - Step 6: Final answer
x = 86,082.60
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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.