Finding the Fourth Proportional to 100,240.68, 138,279.62 and 61,988.02
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Solution
The fourth proportional to 100,240.68, 138,279.62 and 61,988.02 is: 85,510.99
Step by Step Solution
- Step 1: Write the proportion equation
100,240.68 : 138,279.62 = 61,988.02 : x - Step 2: Convert to fraction form
100,240.68/138,279.62 = 61,988.02/x - Step 3: Cross multiply
100,240.68x = 138,279.62 × 61,988.02 - Step 4: Simplify right side
100,240.68x = 8,571,679,850.15 - Step 5: Solve for x
x = 8,571,679,850.15/100,240.68 - Step 6: Final answer
x = 85,510.99
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.