Finding the Fourth Proportional to 133,119.06, 183,699.48 and 72,688.62
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Solution
The fourth proportional to 133,119.06, 183,699.48 and 72,688.62 is: 100,307.66
Step by Step Solution
- Step 1: Write the proportion equation
133,119.06 : 183,699.48 = 72,688.62 : x - Step 2: Convert to fraction form
133,119.06/183,699.48 = 72,688.62/x - Step 3: Cross multiply
133,119.06x = 183,699.48 × 72,688.62 - Step 4: Simplify right side
133,119.06x = 13,352,861,695.92 - Step 5: Solve for x
x = 13,352,861,695.92/133,119.06 - Step 6: Final answer
x = 100,307.66
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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.