Finding the Fourth Proportional to 101,420.62, 139,833.21 and 65,057.95
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Solution
The fourth proportional to 101,420.62, 139,833.21 and 65,057.95 is: 89,698.35
Step by Step Solution
- Step 1: Write the proportion equation
101,420.62 : 139,833.21 = 65,057.95 : x - Step 2: Convert to fraction form
101,420.62/139,833.21 = 65,057.95/x - Step 3: Cross multiply
101,420.62x = 139,833.21 × 65,057.95 - Step 4: Simplify right side
101,420.62x = 9,097,262,403.28 - Step 5: Solve for x
x = 9,097,262,403.28/101,420.62 - Step 6: Final answer
x = 89,698.35
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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.