Finding the Fourth Proportional to 138,669.24, 191,295.90 and 84,937.08
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Solution
The fourth proportional to 138,669.24, 191,295.90 and 84,937.08 is: 117,171.73
Step by Step Solution
- Step 1: Write the proportion equation
138,669.24 : 191,295.90 = 84,937.08 : x - Step 2: Convert to fraction form
138,669.24/191,295.90 = 84,937.08/x - Step 3: Cross multiply
138,669.24x = 191,295.90 × 84,937.08 - Step 4: Simplify right side
138,669.24x = 16,248,115,161.97 - Step 5: Solve for x
x = 16,248,115,161.97/138,669.24 - Step 6: Final answer
x = 117,171.73
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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.