Finding the Fourth Proportional to 138,407.02, 207,610.65 and 99,041.02
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Solution
The fourth proportional to 138,407.02, 207,610.65 and 99,041.02 is: 148,561.62
Step by Step Solution
- Step 1: Write the proportion equation
138,407.02 : 207,610.65 = 99,041.02 : x - Step 2: Convert to fraction form
138,407.02/207,610.65 = 99,041.02/x - Step 3: Cross multiply
138,407.02x = 207,610.65 × 99,041.02 - Step 4: Simplify right side
138,407.02x = 20,561,970,538.86 - Step 5: Solve for x
x = 20,561,970,538.86/138,407.02 - Step 6: Final answer
x = 148,561.62
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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.