Finding the Fourth Proportional to 133,782.72, 184,605.12 and 77,212.80
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Solution
The fourth proportional to 133,782.72, 184,605.12 and 77,212.80 is: 106,544.99
Step by Step Solution
- Step 1: Write the proportion equation
133,782.72 : 184,605.12 = 77,212.80 : x - Step 2: Convert to fraction form
133,782.72/184,605.12 = 77,212.80/x - Step 3: Cross multiply
133,782.72x = 184,605.12 × 77,212.80 - Step 4: Simplify right side
133,782.72x = 14,253,878,209.54 - Step 5: Solve for x
x = 14,253,878,209.54/133,782.72 - Step 6: Final answer
x = 106,544.99
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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.