Finding the Fourth Proportional to 102,905.56, 141,873.54 and 74,201.20
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Solution
The fourth proportional to 102,905.56, 141,873.54 and 74,201.20 is: 102,299.50
Step by Step Solution
- Step 1: Write the proportion equation
102,905.56 : 141,873.54 = 74,201.20 : x - Step 2: Convert to fraction form
102,905.56/141,873.54 = 74,201.20/x - Step 3: Cross multiply
102,905.56x = 141,873.54 × 74,201.20 - Step 4: Simplify right side
102,905.56x = 10,527,186,916.25 - Step 5: Solve for x
x = 10,527,186,916.25/102,905.56 - Step 6: Final answer
x = 102,299.50
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1.5x scale
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.