Finding the Fourth Proportional to 117,981.81, 176,998.62 and 86,722.29
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Solution
The fourth proportional to 117,981.81, 176,998.62 and 86,722.29 is: 130,102.48
Step by Step Solution
- Step 1: Write the proportion equation
117,981.81 : 176,998.62 = 86,722.29 : x - Step 2: Convert to fraction form
117,981.81/176,998.62 = 86,722.29/x - Step 3: Cross multiply
117,981.81x = 176,998.62 × 86,722.29 - Step 4: Simplify right side
117,981.81x = 15,349,725,653.24 - Step 5: Solve for x
x = 15,349,725,653.24/117,981.81 - Step 6: Final answer
x = 130,102.48
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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.