Finding the Fourth Proportional to 88,190.87, 121,656.78 and 55,868.49
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Solution
The fourth proportional to 88,190.87, 121,656.78 and 55,868.49 is: 77,068.99
Step by Step Solution
- Step 1: Write the proportion equation
88,190.87 : 121,656.78 = 55,868.49 : x - Step 2: Convert to fraction form
88,190.87/121,656.78 = 55,868.49/x - Step 3: Cross multiply
88,190.87x = 121,656.78 × 55,868.49 - Step 4: Simplify right side
88,190.87x = 6,796,780,596.86 - Step 5: Solve for x
x = 6,796,780,596.86/88,190.87 - Step 6: Final answer
x = 77,068.99
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1.5x scale
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.