Finding the Fourth Proportional to 105,723.70, 158,612.55 and 74,619.70
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Solution
The fourth proportional to 105,723.70, 158,612.55 and 74,619.70 is: 111,948.61
Step by Step Solution
- Step 1: Write the proportion equation
105,723.70 : 158,612.55 = 74,619.70 : x - Step 2: Convert to fraction form
105,723.70/158,612.55 = 74,619.70/x - Step 3: Cross multiply
105,723.70x = 158,612.55 × 74,619.70 - Step 4: Simplify right side
105,723.70x = 11,835,620,897.24 - Step 5: Solve for x
x = 11,835,620,897.24/105,723.70 - Step 6: Final answer
x = 111,948.61
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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.