Finding the Fourth Proportional to 134,905.20, 202,357.80 and 72,697.20
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Solution
The fourth proportional to 134,905.20, 202,357.80 and 72,697.20 is: 109,045.80
Step by Step Solution
- Step 1: Write the proportion equation
134,905.20 : 202,357.80 = 72,697.20 : x - Step 2: Convert to fraction form
134,905.20/202,357.80 = 72,697.20/x - Step 3: Cross multiply
134,905.20x = 202,357.80 × 72,697.20 - Step 4: Simplify right side
134,905.20x = 14,710,845,458.16 - Step 5: Solve for x
x = 14,710,845,458.16/134,905.20 - Step 6: Final answer
x = 109,045.80
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1.5x scale
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.