Finding the Fourth Proportional to 149,430.65, 206,214.44 and 81,447.68
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Solution
The fourth proportional to 149,430.65, 206,214.44 and 81,447.68 is: 112,397.87
Step by Step Solution
- Step 1: Write the proportion equation
149,430.65 : 206,214.44 = 81,447.68 : x - Step 2: Convert to fraction form
149,430.65/206,214.44 = 81,447.68/x - Step 3: Cross multiply
149,430.65x = 206,214.44 × 81,447.68 - Step 4: Simplify right side
149,430.65x = 16,795,686,282.19 - Step 5: Solve for x
x = 16,795,686,282.19/149,430.65 - Step 6: Final answer
x = 112,397.87
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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.