Finding the Fourth Proportional to 149,588.60, 206,428.28 and 81,605.70
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Solution
The fourth proportional to 149,588.60, 206,428.28 and 81,605.70 is: 112,613.69
Step by Step Solution
- Step 1: Write the proportion equation
149,588.60 : 206,428.28 = 81,605.70 : x - Step 2: Convert to fraction form
149,588.60/206,428.28 = 81,605.70/x - Step 3: Cross multiply
149,588.60x = 206,428.28 × 81,605.70 - Step 4: Simplify right side
149,588.60x = 16,845,724,289.20 - Step 5: Solve for x
x = 16,845,724,289.20/149,588.60 - Step 6: Final answer
x = 112,613.69
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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.