Finding the Fourth Proportional to 130,418.21, 179,977.88 and 76,705.49
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Solution
The fourth proportional to 130,418.21, 179,977.88 and 76,705.49 is: 105,854.02
Step by Step Solution
- Step 1: Write the proportion equation
130,418.21 : 179,977.88 = 76,705.49 : x - Step 2: Convert to fraction form
130,418.21/179,977.88 = 76,705.49/x - Step 3: Cross multiply
130,418.21x = 179,977.88 × 76,705.49 - Step 4: Simplify right side
130,418.21x = 13,805,291,474.56 - Step 5: Solve for x
x = 13,805,291,474.56/130,418.21 - Step 6: Final answer
x = 105,854.02
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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.