Finding the Fourth Proportional to 153,763.84, 212,193.90 and 86,695.84
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Solution
The fourth proportional to 153,763.84, 212,193.90 and 86,695.84 is: 119,640.15
Step by Step Solution
- Step 1: Write the proportion equation
153,763.84 : 212,193.90 = 86,695.84 : x - Step 2: Convert to fraction form
153,763.84/212,193.90 = 86,695.84/x - Step 3: Cross multiply
153,763.84x = 212,193.90 × 86,695.84 - Step 4: Simplify right side
153,763.84x = 18,396,328,403.38 - Step 5: Solve for x
x = 18,396,328,403.38/153,763.84 - Step 6: Final answer
x = 119,640.15
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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.