Finding the Fourth Proportional to 117,763.61, 162,510.30 and 66,780.99
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Solution
The fourth proportional to 117,763.61, 162,510.30 and 66,780.99 is: 92,155.80
Step by Step Solution
- Step 1: Write the proportion equation
117,763.61 : 162,510.30 = 66,780.99 : x - Step 2: Convert to fraction form
117,763.61/162,510.30 = 66,780.99/x - Step 3: Cross multiply
117,763.61x = 162,510.30 × 66,780.99 - Step 4: Simplify right side
117,763.61x = 10,852,598,719.20 - Step 5: Solve for x
x = 10,852,598,719.20/117,763.61 - Step 6: Final answer
x = 92,155.80
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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.