Finding the Fourth Proportional to 92,132.64, 138,020.80 and 77,163.84
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Solution
The fourth proportional to 92,132.64, 138,020.80 and 77,163.84 is: 115,596.55
Step by Step Solution
- Step 1: Write the proportion equation
92,132.64 : 138,020.80 = 77,163.84 : x - Step 2: Convert to fraction form
92,132.64/138,020.80 = 77,163.84/x - Step 3: Cross multiply
92,132.64x = 138,020.80 × 77,163.84 - Step 4: Simplify right side
92,132.64x = 10,650,214,927.87 - Step 5: Solve for x
x = 10,650,214,927.87/92,132.64 - Step 6: Final answer
x = 115,596.55
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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.