Finding the Fourth Proportional to 138,022.74, 190,811.04 and 136,759.74
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Solution
The fourth proportional to 138,022.74, 190,811.04 and 136,759.74 is: 189,064.99
Step by Step Solution
- Step 1: Write the proportion equation
138,022.74 : 190,811.04 = 136,759.74 : x - Step 2: Convert to fraction form
138,022.74/190,811.04 = 136,759.74/x - Step 3: Cross multiply
138,022.74x = 190,811.04 × 136,759.74 - Step 4: Simplify right side
138,022.74x = 26,095,268,219.53 - Step 5: Solve for x
x = 26,095,268,219.53/138,022.74 - Step 6: Final answer
x = 189,064.99
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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.