Finding the Fourth Proportional to 103,707.90, 155,302.65 and 68,456.70
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Solution
The fourth proportional to 103,707.90, 155,302.65 and 68,456.70 is: 102,513.95
Step by Step Solution
- Step 1: Write the proportion equation
103,707.90 : 155,302.65 = 68,456.70 : x - Step 2: Convert to fraction form
103,707.90/155,302.65 = 68,456.70/x - Step 3: Cross multiply
103,707.90x = 155,302.65 × 68,456.70 - Step 4: Simplify right side
103,707.90x = 10,631,506,920.26 - Step 5: Solve for x
x = 10,631,506,920.26/103,707.90 - Step 6: Final answer
x = 102,513.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.