Finding the Fourth Proportional to 139,691.79, 192,640.68 and 93,855.11
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Solution
The fourth proportional to 139,691.79, 192,640.68 and 93,855.11 is: 129,430.02
Step by Step Solution
- Step 1: Write the proportion equation
139,691.79 : 192,640.68 = 93,855.11 : x - Step 2: Convert to fraction form
139,691.79/192,640.68 = 93,855.11/x - Step 3: Cross multiply
139,691.79x = 192,640.68 × 93,855.11 - Step 4: Simplify right side
139,691.79x = 18,080,311,248.67 - Step 5: Solve for x
x = 18,080,311,248.67/139,691.79 - Step 6: Final answer
x = 129,430.02
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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.