Finding the Fourth Proportional to 139,027.80, 208,541.70 and 121,531.80
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Solution
The fourth proportional to 139,027.80, 208,541.70 and 121,531.80 is: 182,297.70
Step by Step Solution
- Step 1: Write the proportion equation
139,027.80 : 208,541.70 = 121,531.80 : x - Step 2: Convert to fraction form
139,027.80/208,541.70 = 121,531.80/x - Step 3: Cross multiply
139,027.80x = 208,541.70 × 121,531.80 - Step 4: Simplify right side
139,027.80x = 25,344,448,176.06 - Step 5: Solve for x
x = 25,344,448,176.06/139,027.80 - Step 6: Final answer
x = 182,297.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.