Finding the Fourth Proportional to 88,363.16, 121,986.34 and 68,174.68
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Solution
The fourth proportional to 88,363.16, 121,986.34 and 68,174.68 is: 94,115.92
Step by Step Solution
- Step 1: Write the proportion equation
88,363.16 : 121,986.34 = 68,174.68 : x - Step 2: Convert to fraction form
88,363.16/121,986.34 = 68,174.68/x - Step 3: Cross multiply
88,363.16x = 121,986.34 × 68,174.68 - Step 4: Simplify right side
88,363.16x = 8,316,379,693.87 - Step 5: Solve for x
x = 8,316,379,693.87/88,363.16 - Step 6: Final answer
x = 94,115.92
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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.