Finding the Fourth Proportional to 100,882.60, 138,209.76 and 97,099.09
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Solution
The fourth proportional to 100,882.60, 138,209.76 and 97,099.09 is: 133,026.33
Step by Step Solution
- Step 1: Write the proportion equation
100,882.60 : 138,209.76 = 97,099.09 : x - Step 2: Convert to fraction form
100,882.60/138,209.76 = 97,099.09/x - Step 3: Cross multiply
100,882.60x = 138,209.76 × 97,099.09 - Step 4: Simplify right side
100,882.60x = 13,420,041,579.59 - Step 5: Solve for x
x = 13,420,041,579.59/100,882.60 - Step 6: Final answer
x = 133,026.33
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.