Finding the Fourth Proportional to 123,495.57, 170,352.82 and 74,403.09
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Solution
The fourth proportional to 123,495.57, 170,352.82 and 74,403.09 is: 102,633.45
Step by Step Solution
- Step 1: Write the proportion equation
123,495.57 : 170,352.82 = 74,403.09 : x - Step 2: Convert to fraction form
123,495.57/170,352.82 = 74,403.09/x - Step 3: Cross multiply
123,495.57x = 170,352.82 × 74,403.09 - Step 4: Simplify right side
123,495.57x = 12,674,776,291.22 - Step 5: Solve for x
x = 12,674,776,291.22/123,495.57 - Step 6: Final answer
x = 102,633.45
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1.5x scale
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.