Finding the Fourth Proportional to 109,252.20, 163,878.30 and 86,701.80
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Solution
The fourth proportional to 109,252.20, 163,878.30 and 86,701.80 is: 130,052.70
Step by Step Solution
- Step 1: Write the proportion equation
109,252.20 : 163,878.30 = 86,701.80 : x - Step 2: Convert to fraction form
109,252.20/163,878.30 = 86,701.80/x - Step 3: Cross multiply
109,252.20x = 163,878.30 × 86,701.80 - Step 4: Simplify right side
109,252.20x = 14,208,543,590.94 - Step 5: Solve for x
x = 14,208,543,590.94/109,252.20 - Step 6: Final answer
x = 130,052.70
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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.