Finding the Fourth Proportional to 112,217.19, 154,860.26 and 61,916.19
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Solution
The fourth proportional to 112,217.19, 154,860.26 and 61,916.19 is: 85,444.64
Step by Step Solution
- Step 1: Write the proportion equation
112,217.19 : 154,860.26 = 61,916.19 : x - Step 2: Convert to fraction form
112,217.19/154,860.26 = 61,916.19/x - Step 3: Cross multiply
112,217.19x = 154,860.26 × 61,916.19 - Step 4: Simplify right side
112,217.19x = 9,588,356,972.03 - Step 5: Solve for x
x = 9,588,356,972.03/112,217.19 - Step 6: Final answer
x = 85,444.64
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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.