Finding the Fourth Proportional to 123,638.19, 185,305.28 and 56,985.81
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Solution
The fourth proportional to 123,638.19, 185,305.28 and 56,985.81 is: 85,408.65
Step by Step Solution
- Step 1: Write the proportion equation
123,638.19 : 185,305.28 = 56,985.81 : x - Step 2: Convert to fraction form
123,638.19/185,305.28 = 56,985.81/x - Step 3: Cross multiply
123,638.19x = 185,305.28 × 56,985.81 - Step 4: Simplify right side
123,638.19x = 10,559,771,193.15 - Step 5: Solve for x
x = 10,559,771,193.15/123,638.19 - Step 6: Final answer
x = 85,408.65
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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.