Finding the Fourth Proportional to 133,149.08, 183,747.12 and 72,721.46
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Solution
The fourth proportional to 133,149.08, 183,747.12 and 72,721.46 is: 100,356.37
Step by Step Solution
- Step 1: Write the proportion equation
133,149.08 : 183,747.12 = 72,721.46 : x - Step 2: Convert to fraction form
133,149.08/183,747.12 = 72,721.46/x - Step 3: Cross multiply
133,149.08x = 183,747.12 × 72,721.46 - Step 4: Simplify right side
133,149.08x = 13,362,358,837.20 - Step 5: Solve for x
x = 13,362,358,837.20/133,149.08 - Step 6: Final answer
x = 100,356.37
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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.