Finding the Fourth Proportional to 134,905.70, 202,358.55 and 72,697.70
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Solution
The fourth proportional to 134,905.70, 202,358.55 and 72,697.70 is: 109,046.55
Step by Step Solution
- Step 1: Write the proportion equation
134,905.70 : 202,358.55 = 72,697.70 : x - Step 2: Convert to fraction form
134,905.70/202,358.55 = 72,697.70/x - Step 3: Cross multiply
134,905.70x = 202,358.55 × 72,697.70 - Step 4: Simplify right side
134,905.70x = 14,711,001,160.34 - Step 5: Solve for x
x = 14,711,001,160.34/134,905.70 - Step 6: Final answer
x = 109,046.55
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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.