Finding the Fourth Proportional to 134,865.20, 202,297.80 and 72,657.20
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Solution
The fourth proportional to 134,865.20, 202,297.80 and 72,657.20 is: 108,985.80
Step by Step Solution
- Step 1: Write the proportion equation
134,865.20 : 202,297.80 = 72,657.20 : x - Step 2: Convert to fraction form
134,865.20/202,297.80 = 72,657.20/x - Step 3: Cross multiply
134,865.20x = 202,297.80 × 72,657.20 - Step 4: Simplify right side
134,865.20x = 14,698,391,714.16 - Step 5: Solve for x
x = 14,698,391,714.16/134,865.20 - Step 6: Final answer
x = 108,985.80
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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.