Finding the Fourth Proportional to 190,326.09, 262,639.66 and 105,438.09
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Solution
The fourth proportional to 190,326.09, 262,639.66 and 105,438.09 is: 145,498.83
Step by Step Solution
- Step 1: Write the proportion equation
190,326.09 : 262,639.66 = 105,438.09 : x - Step 2: Convert to fraction form
190,326.09/262,639.66 = 105,438.09/x - Step 3: Cross multiply
190,326.09x = 262,639.66 × 105,438.09 - Step 4: Simplify right side
190,326.09x = 27,692,224,108.65 - Step 5: Solve for x
x = 27,692,224,108.65/190,326.09 - Step 6: Final answer
x = 145,498.83
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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.