Finding the Fourth Proportional to 97,806.74, 134,963.96 and 77,712.26
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Solution
The fourth proportional to 97,806.74, 134,963.96 and 77,712.26 is: 107,235.50
Step by Step Solution
- Step 1: Write the proportion equation
97,806.74 : 134,963.96 = 77,712.26 : x - Step 2: Convert to fraction form
97,806.74/134,963.96 = 77,712.26/x - Step 3: Cross multiply
97,806.74x = 134,963.96 × 77,712.26 - Step 4: Simplify right side
97,806.74x = 10,488,354,350.15 - Step 5: Solve for x
x = 10,488,354,350.15/97,806.74 - Step 6: Final answer
x = 107,235.50
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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.