Finding the Fourth Proportional to 112,425.10, 155,148.68 and 61,439.99
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Solution
The fourth proportional to 112,425.10, 155,148.68 and 61,439.99 is: 84,788.30
Step by Step Solution
- Step 1: Write the proportion equation
112,425.10 : 155,148.68 = 61,439.99 : x - Step 2: Convert to fraction form
112,425.10/155,148.68 = 61,439.99/x - Step 3: Cross multiply
112,425.10x = 155,148.68 × 61,439.99 - Step 4: Simplify right side
112,425.10x = 9,532,333,040.51 - Step 5: Solve for x
x = 9,532,333,040.51/112,425.10 - Step 6: Final answer
x = 84,788.30
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1.5x scale
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.