Finding the Fourth Proportional to 131,398.02, 181,291.68 and 74,017.26
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Solution
The fourth proportional to 131,398.02, 181,291.68 and 74,017.26 is: 102,122.65
Step by Step Solution
- Step 1: Write the proportion equation
131,398.02 : 181,291.68 = 74,017.26 : x - Step 2: Convert to fraction form
131,398.02/181,291.68 = 74,017.26/x - Step 3: Cross multiply
131,398.02x = 181,291.68 × 74,017.26 - Step 4: Simplify right side
131,398.02x = 13,418,713,414.40 - Step 5: Solve for x
x = 13,418,713,414.40/131,398.02 - Step 6: Final answer
x = 102,122.65
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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.