Finding the Fourth Proportional to 147,695.70, 221,543.55 and 137,781.30
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Solution
The fourth proportional to 147,695.70, 221,543.55 and 137,781.30 is: 206,671.95
Step by Step Solution
- Step 1: Write the proportion equation
147,695.70 : 221,543.55 = 137,781.30 : x - Step 2: Convert to fraction form
147,695.70/221,543.55 = 137,781.30/x - Step 3: Cross multiply
147,695.70x = 221,543.55 × 137,781.30 - Step 4: Simplify right side
147,695.70x = 30,524,558,325.62 - Step 5: Solve for x
x = 30,524,558,325.62/147,695.70 - Step 6: Final answer
x = 206,671.95
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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.