Finding the Fourth Proportional to 103,909.74, 143,395.41 and 56,163.07
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Solution
The fourth proportional to 103,909.74, 143,395.41 and 56,163.07 is: 77,505.03
Step by Step Solution
- Step 1: Write the proportion equation
103,909.74 : 143,395.41 = 56,163.07 : x - Step 2: Convert to fraction form
103,909.74/143,395.41 = 56,163.07/x - Step 3: Cross multiply
103,909.74x = 143,395.41 × 56,163.07 - Step 4: Simplify right side
103,909.74x = 8,053,526,839.36 - Step 5: Solve for x
x = 8,053,526,839.36/103,909.74 - Step 6: Final answer
x = 77,505.03
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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.