Finding the Fourth Proportional to 161,771.70, 242,657.55 and 91,787.70
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Solution
The fourth proportional to 161,771.70, 242,657.55 and 91,787.70 is: 137,681.55
Step by Step Solution
- Step 1: Write the proportion equation
161,771.70 : 242,657.55 = 91,787.70 : x - Step 2: Convert to fraction form
161,771.70/242,657.55 = 91,787.70/x - Step 3: Cross multiply
161,771.70x = 242,657.55 × 91,787.70 - Step 4: Simplify right side
161,771.70x = 22,272,978,402.14 - Step 5: Solve for x
x = 22,272,978,402.14/161,771.70 - Step 6: Final answer
x = 137,681.55
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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.