Finding the Fourth Proportional to 158,386.76, 218,579.16 and 86,766.75
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Solution
The fourth proportional to 158,386.76, 218,579.16 and 86,766.75 is: 119,741.09
Step by Step Solution
- Step 1: Write the proportion equation
158,386.76 : 218,579.16 = 86,766.75 : x - Step 2: Convert to fraction form
158,386.76/218,579.16 = 86,766.75/x - Step 3: Cross multiply
158,386.76x = 218,579.16 × 86,766.75 - Step 4: Simplify right side
158,386.76x = 18,965,403,330.93 - Step 5: Solve for x
x = 18,965,403,330.93/158,386.76 - Step 6: Final answer
x = 119,741.09
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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.