Finding the Fourth Proportional to 102,365.80, 153,548.70 and 76,121.80
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Solution
The fourth proportional to 102,365.80, 153,548.70 and 76,121.80 is: 114,182.70
Step by Step Solution
- Step 1: Write the proportion equation
102,365.80 : 153,548.70 = 76,121.80 : x - Step 2: Convert to fraction form
102,365.80/153,548.70 = 76,121.80/x - Step 3: Cross multiply
102,365.80x = 153,548.70 × 76,121.80 - Step 4: Simplify right side
102,365.80x = 11,688,403,431.66 - Step 5: Solve for x
x = 11,688,403,431.66/102,365.80 - Step 6: Final answer
x = 114,182.70
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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.