Finding the Fourth Proportional to 133,071.57, 183,639.14 and 72,642.27
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Solution
The fourth proportional to 133,071.57, 183,639.14 and 72,642.27 is: 100,246.53
Step by Step Solution
- Step 1: Write the proportion equation
133,071.57 : 183,639.14 = 72,642.27 : x - Step 2: Convert to fraction form
133,071.57/183,639.14 = 72,642.27/x - Step 3: Cross multiply
133,071.57x = 183,639.14 × 72,642.27 - Step 4: Simplify right side
133,071.57x = 13,339,963,627.24 - Step 5: Solve for x
x = 13,339,963,627.24/133,071.57 - Step 6: Final answer
x = 100,246.53
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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.