Finding the Fourth Proportional to 105,536.80, 158,535.60 and 74,432.80
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Solution
The fourth proportional to 105,536.80, 158,535.60 and 74,432.80 is: 111,811.70
Step by Step Solution
- Step 1: Write the proportion equation
105,536.80 : 158,535.60 = 74,432.80 : x - Step 2: Convert to fraction form
105,536.80/158,535.60 = 74,432.80/x - Step 3: Cross multiply
105,536.80x = 158,535.60 × 74,432.80 - Step 4: Simplify right side
105,536.80x = 11,800,248,607.68 - Step 5: Solve for x
x = 11,800,248,607.68/105,536.80 - Step 6: Final answer
x = 111,811.70
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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.