Finding the Fourth Proportional to 117,790.70, 176,254.05 and 86,686.70
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Solution
The fourth proportional to 117,790.70, 176,254.05 and 86,686.70 is: 129,712.12
Step by Step Solution
- Step 1: Write the proportion equation
117,790.70 : 176,254.05 = 86,686.70 : x - Step 2: Convert to fraction form
117,790.70/176,254.05 = 86,686.70/x - Step 3: Cross multiply
117,790.70x = 176,254.05 × 86,686.70 - Step 4: Simplify right side
117,790.70x = 15,278,881,956.14 - Step 5: Solve for x
x = 15,278,881,956.14/117,790.70 - Step 6: Final answer
x = 129,712.12
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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.