Finding the Fourth Proportional to 131,353.16, 181,268.52 and 74,768.18
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Solution
The fourth proportional to 131,353.16, 181,268.52 and 74,768.18 is: 103,180.75
Step by Step Solution
- Step 1: Write the proportion equation
131,353.16 : 181,268.52 = 74,768.18 : x - Step 2: Convert to fraction form
131,353.16/181,268.52 = 74,768.18/x - Step 3: Cross multiply
131,353.16x = 181,268.52 × 74,768.18 - Step 4: Simplify right side
131,353.16x = 13,553,117,331.69 - Step 5: Solve for x
x = 13,553,117,331.69/131,353.16 - Step 6: Final answer
x = 103,180.75
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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.