Finding the Fourth Proportional to 133,130.09, 183,712.68 and 72,689.09
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Solution
The fourth proportional to 133,130.09, 183,712.68 and 72,689.09 is: 100,307.20
Step by Step Solution
- Step 1: Write the proportion equation
133,130.09 : 183,712.68 = 72,689.09 : x - Step 2: Convert to fraction form
133,130.09/183,712.68 = 72,689.09/x - Step 3: Cross multiply
133,130.09x = 183,712.68 × 72,689.09 - Step 4: Simplify right side
133,130.09x = 13,353,906,612.10 - Step 5: Solve for x
x = 13,353,906,612.10/133,130.09 - Step 6: Final answer
x = 100,307.20
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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.