Finding the Fourth Proportional to 131,577.12, 181,578.29 and 74,219.13
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Solution
The fourth proportional to 131,577.12, 181,578.29 and 74,219.13 is: 102,423.45
Step by Step Solution
- Step 1: Write the proportion equation
131,577.12 : 181,578.29 = 74,219.13 : x - Step 2: Convert to fraction form
131,577.12/181,578.29 = 74,219.13/x - Step 3: Cross multiply
131,577.12x = 181,578.29 × 74,219.13 - Step 4: Simplify right side
131,577.12x = 13,476,582,339.59 - Step 5: Solve for x
x = 13,476,582,339.59/131,577.12 - Step 6: Final answer
x = 102,423.45
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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.