Finding the Fourth Proportional to 158,319.84, 218,479.74 and 85,721.48
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Solution
The fourth proportional to 158,319.84, 218,479.74 and 85,721.48 is: 118,294.75
Step by Step Solution
- Step 1: Write the proportion equation
158,319.84 : 218,479.74 = 85,721.48 : x - Step 2: Convert to fraction form
158,319.84/218,479.74 = 85,721.48/x - Step 3: Cross multiply
158,319.84x = 218,479.74 × 85,721.48 - Step 4: Simplify right side
158,319.84x = 18,728,406,234.21 - Step 5: Solve for x
x = 18,728,406,234.21/158,319.84 - Step 6: Final answer
x = 118,294.75
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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.