Finding the Fourth Proportional to 138,396.58, 207,594.84 and 99,030.58
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Solution
The fourth proportional to 138,396.58, 207,594.84 and 99,030.58 is: 148,545.85
Step by Step Solution
- Step 1: Write the proportion equation
138,396.58 : 207,594.84 = 99,030.58 : x - Step 2: Convert to fraction form
138,396.58/207,594.84 = 99,030.58/x - Step 3: Cross multiply
138,396.58x = 207,594.84 × 99,030.58 - Step 4: Simplify right side
138,396.58x = 20,558,237,410.21 - Step 5: Solve for x
x = 20,558,237,410.21/138,396.58 - Step 6: Final answer
x = 148,545.85
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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.