Finding the Fourth Proportional to 126,403.81, 174,438.16 and 69,815.18
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Solution
The fourth proportional to 126,403.81, 174,438.16 and 69,815.18 is: 96,345.45
Step by Step Solution
- Step 1: Write the proportion equation
126,403.81 : 174,438.16 = 69,815.18 : x - Step 2: Convert to fraction form
126,403.81/174,438.16 = 69,815.18/x - Step 3: Cross multiply
126,403.81x = 174,438.16 × 69,815.18 - Step 4: Simplify right side
126,403.81x = 12,178,431,800.83 - Step 5: Solve for x
x = 12,178,431,800.83/126,403.81 - Step 6: Final answer
x = 96,345.45
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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.