Finding the Fourth Proportional to 112,425.60, 155,149.37 and 61,440.49
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Solution
The fourth proportional to 112,425.60, 155,149.37 and 61,440.49 is: 84,788.99
Step by Step Solution
- Step 1: Write the proportion equation
112,425.60 : 155,149.37 = 61,440.49 : x - Step 2: Convert to fraction form
112,425.60/155,149.37 = 61,440.49/x - Step 3: Cross multiply
112,425.60x = 155,149.37 × 61,440.49 - Step 4: Simplify right side
112,425.60x = 9,532,453,008.79 - Step 5: Solve for x
x = 9,532,453,008.79/112,425.60 - Step 6: Final answer
x = 84,788.99
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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.