Finding the Fourth Proportional to 99,907.14, 149,131.87 and 87,295.66
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Solution
The fourth proportional to 99,907.14, 149,131.87 and 87,295.66 is: 130,306.65
Step by Step Solution
- Step 1: Write the proportion equation
99,907.14 : 149,131.87 = 87,295.66 : x - Step 2: Convert to fraction form
99,907.14/149,131.87 = 87,295.66/x - Step 3: Cross multiply
99,907.14x = 149,131.87 × 87,295.66 - Step 4: Simplify right side
99,907.14x = 13,018,565,018.68 - Step 5: Solve for x
x = 13,018,565,018.68/99,907.14 - Step 6: Final answer
x = 130,306.65
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.