Finding the Fourth Proportional to 109,632.05, 151,298.30 and 77,376.99
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Solution
The fourth proportional to 109,632.05, 151,298.30 and 77,376.99 is: 106,784.54
Step by Step Solution
- Step 1: Write the proportion equation
109,632.05 : 151,298.30 = 77,376.99 : x - Step 2: Convert to fraction form
109,632.05/151,298.30 = 77,376.99/x - Step 3: Cross multiply
109,632.05x = 151,298.30 × 77,376.99 - Step 4: Simplify right side
109,632.05x = 11,707,007,806.93 - Step 5: Solve for x
x = 11,707,007,806.93/109,632.05 - Step 6: Final answer
x = 106,784.54
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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.