Finding the Fourth Proportional to 104,202.21, 143,719.70 and 89,691.09
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Solution
The fourth proportional to 104,202.21, 143,719.70 and 89,691.09 is: 123,705.41
Step by Step Solution
- Step 1: Write the proportion equation
104,202.21 : 143,719.70 = 89,691.09 : x - Step 2: Convert to fraction form
104,202.21/143,719.70 = 89,691.09/x - Step 3: Cross multiply
104,202.21x = 143,719.70 × 89,691.09 - Step 4: Simplify right side
104,202.21x = 12,890,376,411.81 - Step 5: Solve for x
x = 12,890,376,411.81/104,202.21 - Step 6: Final answer
x = 123,705.41
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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.