Finding the Fourth Proportional to 100,228.86, 138,386.07 and 68,386.14
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Solution
The fourth proportional to 100,228.86, 138,386.07 and 68,386.14 is: 94,420.80
Step by Step Solution
- Step 1: Write the proportion equation
100,228.86 : 138,386.07 = 68,386.14 : x - Step 2: Convert to fraction form
100,228.86/138,386.07 = 68,386.14/x - Step 3: Cross multiply
100,228.86x = 138,386.07 × 68,386.14 - Step 4: Simplify right side
100,228.86x = 9,463,689,157.07 - Step 5: Solve for x
x = 9,463,689,157.07/100,228.86 - Step 6: Final answer
x = 94,420.80
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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.