Finding the Fourth Proportional to 88,368.16, 121,993.24 and 68,179.68
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Solution
The fourth proportional to 88,368.16, 121,993.24 and 68,179.68 is: 94,122.82
Step by Step Solution
- Step 1: Write the proportion equation
88,368.16 : 121,993.24 = 68,179.68 : x - Step 2: Convert to fraction form
88,368.16/121,993.24 = 68,179.68/x - Step 3: Cross multiply
88,368.16x = 121,993.24 × 68,179.68 - Step 4: Simplify right side
88,368.16x = 8,317,460,065.36 - Step 5: Solve for x
x = 8,317,460,065.36/88,368.16 - Step 6: Final answer
x = 94,122.82
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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.