Finding the Fourth Proportional to 112,395.28, 155,116.21 and 61,415.75
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Solution
The fourth proportional to 112,395.28, 155,116.21 and 61,415.75 is: 84,759.59
Step by Step Solution
- Step 1: Write the proportion equation
112,395.28 : 155,116.21 = 61,415.75 : x - Step 2: Convert to fraction form
112,395.28/155,116.21 = 61,415.75/x - Step 3: Cross multiply
112,395.28x = 155,116.21 × 61,415.75 - Step 4: Simplify right side
112,395.28x = 9,526,578,374.31 - Step 5: Solve for x
x = 9,526,578,374.31/112,395.28 - Step 6: Final answer
x = 84,759.59
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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.