Finding the Fourth Proportional to 138,804.48, 207,964.80 and 83,278.08
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Solution
The fourth proportional to 138,804.48, 207,964.80 and 83,278.08 is: 124,771.98
Step by Step Solution
- Step 1: Write the proportion equation
138,804.48 : 207,964.80 = 83,278.08 : x - Step 2: Convert to fraction form
138,804.48/207,964.80 = 83,278.08/x - Step 3: Cross multiply
138,804.48x = 207,964.80 × 83,278.08 - Step 4: Simplify right side
138,804.48x = 17,318,909,251.58 - Step 5: Solve for x
x = 17,318,909,251.58/138,804.48 - Step 6: Final answer
x = 124,771.98
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.