Finding the Fourth Proportional to 109,419.50, 163,965.18 and 84,422.09
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Solution
The fourth proportional to 109,419.50, 163,965.18 and 84,422.09 is: 126,506.55
Step by Step Solution
- Step 1: Write the proportion equation
109,419.50 : 163,965.18 = 84,422.09 : x - Step 2: Convert to fraction form
109,419.50/163,965.18 = 84,422.09/x - Step 3: Cross multiply
109,419.50x = 163,965.18 × 84,422.09 - Step 4: Simplify right side
109,419.50x = 13,842,283,182.83 - Step 5: Solve for x
x = 13,842,283,182.83/109,419.50 - Step 6: Final answer
x = 126,506.55
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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.