Finding the Fourth Proportional to 145,055.76, 217,408.68 and 74,896.80
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Solution
The fourth proportional to 145,055.76, 217,408.68 and 74,896.80 is: 112,254.86
Step by Step Solution
- Step 1: Write the proportion equation
145,055.76 : 217,408.68 = 74,896.80 : x - Step 2: Convert to fraction form
145,055.76/217,408.68 = 74,896.80/x - Step 3: Cross multiply
145,055.76x = 217,408.68 × 74,896.80 - Step 4: Simplify right side
145,055.76x = 16,283,214,424.22 - Step 5: Solve for x
x = 16,283,214,424.22/145,055.76 - Step 6: Final answer
x = 112,254.86
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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.