Finding the Fourth Proportional to 135,028.60, 202,154.10 and 121,031.80
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Solution
The fourth proportional to 135,028.60, 202,154.10 and 121,031.80 is: 181,199.20
Step by Step Solution
- Step 1: Write the proportion equation
135,028.60 : 202,154.10 = 121,031.80 : x - Step 2: Convert to fraction form
135,028.60/202,154.10 = 121,031.80/x - Step 3: Cross multiply
135,028.60x = 202,154.10 × 121,031.80 - Step 4: Simplify right side
135,028.60x = 24,467,074,600.38 - Step 5: Solve for x
x = 24,467,074,600.38/135,028.60 - Step 6: Final answer
x = 181,199.20
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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.