Finding the Fourth Proportional to 112,459.23, 155,190.84 and 61,472.09
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Solution
The fourth proportional to 112,459.23, 155,190.84 and 61,472.09 is: 84,829.89
Step by Step Solution
- Step 1: Write the proportion equation
112,459.23 : 155,190.84 = 61,472.09 : x - Step 2: Convert to fraction form
112,459.23/155,190.84 = 61,472.09/x - Step 3: Cross multiply
112,459.23x = 155,190.84 × 61,472.09 - Step 4: Simplify right side
112,459.23x = 9,539,904,507.70 - Step 5: Solve for x
x = 9,539,904,507.70/112,459.23 - Step 6: Final answer
x = 84,829.89
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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.