Finding the Fourth Proportional to 133,111.84, 183,701.77 and 72,688.09
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Solution
The fourth proportional to 133,111.84, 183,701.77 and 72,688.09 is: 100,313.62
Step by Step Solution
- Step 1: Write the proportion equation
133,111.84 : 183,701.77 = 72,688.09 : x - Step 2: Convert to fraction form
133,111.84/183,701.77 = 72,688.09/x - Step 3: Cross multiply
133,111.84x = 183,701.77 × 72,688.09 - Step 4: Simplify right side
133,111.84x = 13,352,930,790.92 - Step 5: Solve for x
x = 13,352,930,790.92/133,111.84 - Step 6: Final answer
x = 100,313.62
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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.