Finding the Fourth Proportional to 133,090.14, 183,620.27 and 87,790.62
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Solution
The fourth proportional to 133,090.14, 183,620.27 and 87,790.62 is: 121,121.95
Step by Step Solution
- Step 1: Write the proportion equation
133,090.14 : 183,620.27 = 87,790.62 : x - Step 2: Convert to fraction form
133,090.14/183,620.27 = 87,790.62/x - Step 3: Cross multiply
133,090.14x = 183,620.27 × 87,790.62 - Step 4: Simplify right side
133,090.14x = 16,120,137,347.87 - Step 5: Solve for x
x = 16,120,137,347.87/133,090.14 - Step 6: Final answer
x = 121,121.95
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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.