Finding the Fourth Proportional to 112,190.64, 154,879.20 and 69,762.84
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Solution
The fourth proportional to 112,190.64, 154,879.20 and 69,762.84 is: 96,307.61
Step by Step Solution
- Step 1: Write the proportion equation
112,190.64 : 154,879.20 = 69,762.84 : x - Step 2: Convert to fraction form
112,190.64/154,879.20 = 69,762.84/x - Step 3: Cross multiply
112,190.64x = 154,879.20 × 69,762.84 - Step 4: Simplify right side
112,190.64x = 10,804,812,848.93 - Step 5: Solve for x
x = 10,804,812,848.93/112,190.64 - Step 6: Final answer
x = 96,307.61
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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.