Finding the Fourth Proportional to 140,104.23, 193,343.81 and 76,442.28
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Solution
The fourth proportional to 140,104.23, 193,343.81 and 76,442.28 is: 105,490.33
Step by Step Solution
- Step 1: Write the proportion equation
140,104.23 : 193,343.81 = 76,442.28 : x - Step 2: Convert to fraction form
140,104.23/193,343.81 = 76,442.28/x - Step 3: Cross multiply
140,104.23x = 193,343.81 × 76,442.28 - Step 4: Simplify right side
140,104.23x = 14,779,641,278.08 - Step 5: Solve for x
x = 14,779,641,278.08/140,104.23 - Step 6: Final answer
x = 105,490.33
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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.