Finding the Fourth Proportional to 92,203.20, 138,304.80 and 81,377.55
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Solution
The fourth proportional to 92,203.20, 138,304.80 and 81,377.55 is: 122,066.33
Step by Step Solution
- Step 1: Write the proportion equation
92,203.20 : 138,304.80 = 81,377.55 : x - Step 2: Convert to fraction form
92,203.20/138,304.80 = 81,377.55/x - Step 3: Cross multiply
92,203.20x = 138,304.80 × 81,377.55 - Step 4: Simplify right side
92,203.20x = 11,254,905,777.24 - Step 5: Solve for x
x = 11,254,905,777.24/92,203.20 - Step 6: Final answer
x = 122,066.33
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.