Finding the Fourth Proportional to 139,614.45, 207,842.58 and 138,784.08
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Solution
The fourth proportional to 139,614.45, 207,842.58 and 138,784.08 is: 206,606.42
Step by Step Solution
- Step 1: Write the proportion equation
139,614.45 : 207,842.58 = 138,784.08 : x - Step 2: Convert to fraction form
139,614.45/207,842.58 = 138,784.08/x - Step 3: Cross multiply
139,614.45x = 207,842.58 × 138,784.08 - Step 4: Simplify right side
139,614.45x = 28,845,241,250.13 - Step 5: Solve for x
x = 28,845,241,250.13/139,614.45 - Step 6: Final answer
x = 206,606.42
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.