Finding the Fourth Proportional to 112,307.36, 154,981.74 and 61,318.12
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Solution
The fourth proportional to 112,307.36, 154,981.74 and 61,318.12 is: 84,617.69
Step by Step Solution
- Step 1: Write the proportion equation
112,307.36 : 154,981.74 = 61,318.12 : x - Step 2: Convert to fraction form
112,307.36/154,981.74 = 61,318.12/x - Step 3: Cross multiply
112,307.36x = 154,981.74 × 61,318.12 - Step 4: Simplify right side
112,307.36x = 9,503,188,931.13 - Step 5: Solve for x
x = 9,503,188,931.13/112,307.36 - Step 6: Final answer
x = 84,617.69
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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.