Finding the Fourth Proportional to 112,132.49, 154,741.69 and 61,145.09
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Solution
The fourth proportional to 112,132.49, 154,741.69 and 61,145.09 is: 84,379.61
Step by Step Solution
- Step 1: Write the proportion equation
112,132.49 : 154,741.69 = 61,145.09 : x - Step 2: Convert to fraction form
112,132.49/154,741.69 = 61,145.09/x - Step 3: Cross multiply
112,132.49x = 154,741.69 × 61,145.09 - Step 4: Simplify right side
112,132.49x = 9,461,695,315.23 - Step 5: Solve for x
x = 9,461,695,315.23/112,132.49 - Step 6: Final answer
x = 84,379.61
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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.