Finding the Fourth Proportional to 103,975.52, 155,210.92 and 91,364.09
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Solution
The fourth proportional to 103,975.52, 155,210.92 and 91,364.09 is: 136,385.03
Step by Step Solution
- Step 1: Write the proportion equation
103,975.52 : 155,210.92 = 91,364.09 : x - Step 2: Convert to fraction form
103,975.52/155,210.92 = 91,364.09/x - Step 3: Cross multiply
103,975.52x = 155,210.92 × 91,364.09 - Step 4: Simplify right side
103,975.52x = 14,180,703,459.40 - Step 5: Solve for x
x = 14,180,703,459.40/103,975.52 - Step 6: Final answer
x = 136,385.03
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.