Finding the Fourth Proportional to 131,106.78, 180,926.97 and 74,529.06
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Solution
The fourth proportional to 131,106.78, 180,926.97 and 74,529.06 is: 102,849.88
Step by Step Solution
- Step 1: Write the proportion equation
131,106.78 : 180,926.97 = 74,529.06 : x - Step 2: Convert to fraction form
131,106.78/180,926.97 = 74,529.06/x - Step 3: Cross multiply
131,106.78x = 180,926.97 × 74,529.06 - Step 4: Simplify right side
131,106.78x = 13,484,317,002.75 - Step 5: Solve for x
x = 13,484,317,002.75/131,106.78 - Step 6: Final answer
x = 102,849.88
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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.