Finding the Fourth Proportional to 122,478.71, 183,718.07 and 38,246.09
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Solution
The fourth proportional to 122,478.71, 183,718.07 and 38,246.09 is: 57,369.14
Step by Step Solution
- Step 1: Write the proportion equation
122,478.71 : 183,718.07 = 38,246.09 : x - Step 2: Convert to fraction form
122,478.71/183,718.07 = 38,246.09/x - Step 3: Cross multiply
122,478.71x = 183,718.07 × 38,246.09 - Step 4: Simplify right side
122,478.71x = 7,026,497,839.85 - Step 5: Solve for x
x = 7,026,497,839.85/122,478.71 - Step 6: Final answer
x = 57,369.14
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.