Finding the Fourth Proportional to 113,782.65, 156,987.68 and 68,437.95
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Solution
The fourth proportional to 113,782.65, 156,987.68 and 68,437.95 is: 94,424.90
Step by Step Solution
- Step 1: Write the proportion equation
113,782.65 : 156,987.68 = 68,437.95 : x - Step 2: Convert to fraction form
113,782.65/156,987.68 = 68,437.95/x - Step 3: Cross multiply
113,782.65x = 156,987.68 × 68,437.95 - Step 4: Simplify right side
113,782.65x = 10,743,914,994.46 - Step 5: Solve for x
x = 10,743,914,994.46/113,782.65 - Step 6: Final answer
x = 94,424.90
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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.