Finding the Fourth Proportional to 126,407.12, 174,438.20 and 69,817.28
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Solution
The fourth proportional to 126,407.12, 174,438.20 and 69,817.28 is: 96,345.84
Step by Step Solution
- Step 1: Write the proportion equation
126,407.12 : 174,438.20 = 69,817.28 : x - Step 2: Convert to fraction form
126,407.12/174,438.20 = 69,817.28/x - Step 3: Cross multiply
126,407.12x = 174,438.20 × 69,817.28 - Step 4: Simplify right side
126,407.12x = 12,178,800,652.10 - Step 5: Solve for x
x = 12,178,800,652.10/126,407.12 - Step 6: Final answer
x = 96,345.84
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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.