Finding the Fourth Proportional to 118,343.97, 163,492.83 and 77,605.02
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Solution
The fourth proportional to 118,343.97, 163,492.83 and 77,605.02 is: 107,211.75
Step by Step Solution
- Step 1: Write the proportion equation
118,343.97 : 163,492.83 = 77,605.02 : x - Step 2: Convert to fraction form
118,343.97/163,492.83 = 77,605.02/x - Step 3: Cross multiply
118,343.97x = 163,492.83 × 77,605.02 - Step 4: Simplify right side
118,343.97x = 12,687,864,342.01 - Step 5: Solve for x
x = 12,687,864,342.01/118,343.97 - Step 6: Final answer
x = 107,211.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.