Finding the Fourth Proportional to 123,768,983.81, 170,763,950.81 and 74,191,268.12
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Solution
The fourth proportional to 123,768,983.81, 170,763,950.81 and 74,191,268.12 is: 102,361,622.99
Step by Step Solution
- Step 1: Write the proportion equation
123,768,983.81 : 170,763,950.81 = 74,191,268.12 : x - Step 2: Convert to fraction form
123,768,983.81/170,763,950.81 = 74,191,268.12/x - Step 3: Cross multiply
123,768,983.81x = 170,763,950.81 × 74,191,268.12 - Step 4: Simplify right side
123,768,983.81x = 12,669,194,058,550,424 - Step 5: Solve for x
x = 12,669,194,058,550,424/123,768,983.81 - Step 6: Final answer
x = 102,361,622.99
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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.