Finding the Fourth Proportional to 158,531.49, 218,773.35 and 86,909.94
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Solution
The fourth proportional to 158,531.49, 218,773.35 and 86,909.94 is: 119,935.66
Step by Step Solution
- Step 1: Write the proportion equation
158,531.49 : 218,773.35 = 86,909.94 : x - Step 2: Convert to fraction form
158,531.49/218,773.35 = 86,909.94/x - Step 3: Cross multiply
158,531.49x = 218,773.35 × 86,909.94 - Step 4: Simplify right side
158,531.49x = 19,013,578,722.10 - Step 5: Solve for x
x = 19,013,578,722.10/158,531.49 - Step 6: Final answer
x = 119,935.66
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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.