Finding the Fourth Proportional to 88,343.62, 121,959.36 and 68,155.18
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Solution
The fourth proportional to 88,343.62, 121,959.36 and 68,155.18 is: 94,088.99
Step by Step Solution
- Step 1: Write the proportion equation
88,343.62 : 121,959.36 = 68,155.18 : x - Step 2: Convert to fraction form
88,343.62/121,959.36 = 68,155.18/x - Step 3: Cross multiply
88,343.62x = 121,959.36 × 68,155.18 - Step 4: Simplify right side
88,343.62x = 8,312,162,133.48 - Step 5: Solve for x
x = 8,312,162,133.48/88,343.62 - Step 6: Final answer
x = 94,088.99
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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.