Finding the Fourth Proportional to 97,819.70, 146,729.55 and 91,987.70
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Solution
The fourth proportional to 97,819.70, 146,729.55 and 91,987.70 is: 137,981.55
Step by Step Solution
- Step 1: Write the proportion equation
97,819.70 : 146,729.55 = 91,987.70 : x - Step 2: Convert to fraction form
97,819.70/146,729.55 = 91,987.70/x - Step 3: Cross multiply
97,819.70x = 146,729.55 × 91,987.70 - Step 4: Simplify right side
97,819.70x = 13,497,313,826.54 - Step 5: Solve for x
x = 13,497,313,826.54/97,819.70 - Step 6: Final answer
x = 137,981.55
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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.