Finding the Fourth Proportional to 96,378.30, 144,421.65 and 81,506.70
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Solution
The fourth proportional to 96,378.30, 144,421.65 and 81,506.70 is: 122,136.75
Step by Step Solution
- Step 1: Write the proportion equation
96,378.30 : 144,421.65 = 81,506.70 : x - Step 2: Convert to fraction form
96,378.30/144,421.65 = 81,506.70/x - Step 3: Cross multiply
96,378.30x = 144,421.65 × 81,506.70 - Step 4: Simplify right side
96,378.30x = 11,771,332,100.06 - Step 5: Solve for x
x = 11,771,332,100.06/96,378.30 - Step 6: Final answer
x = 122,136.75
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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.