Finding the Fourth Proportional to 133,122.40, 183,709.68 and 72,692.32
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Solution
The fourth proportional to 133,122.40, 183,709.68 and 72,692.32 is: 100,315.82
Step by Step Solution
- Step 1: Write the proportion equation
133,122.40 : 183,709.68 = 72,692.32 : x - Step 2: Convert to fraction form
133,122.40/183,709.68 = 72,692.32/x - Step 3: Cross multiply
133,122.40x = 183,709.68 × 72,692.32 - Step 4: Simplify right side
133,122.40x = 13,354,282,845.66 - Step 5: Solve for x
x = 13,354,282,845.66/133,122.40 - Step 6: Final answer
x = 100,315.82
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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.