Finding the Fourth Proportional to 181,981.80, 272,972.70 and 128,837.70
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Solution
The fourth proportional to 181,981.80, 272,972.70 and 128,837.70 is: 193,256.55
Step by Step Solution
- Step 1: Write the proportion equation
181,981.80 : 272,972.70 = 128,837.70 : x - Step 2: Convert to fraction form
181,981.80/272,972.70 = 128,837.70/x - Step 3: Cross multiply
181,981.80x = 272,972.70 × 128,837.70 - Step 4: Simplify right side
181,981.80x = 35,169,174,830.79 - Step 5: Solve for x
x = 35,169,174,830.79/181,981.80 - Step 6: Final answer
x = 193,256.55
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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.