Finding the Fourth Proportional to 125,813.70, 188,720.55 and 42,707.70
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Solution
The fourth proportional to 125,813.70, 188,720.55 and 42,707.70 is: 64,061.55
Step by Step Solution
- Step 1: Write the proportion equation
125,813.70 : 188,720.55 = 42,707.70 : x - Step 2: Convert to fraction form
125,813.70/188,720.55 = 42,707.70/x - Step 3: Cross multiply
125,813.70x = 188,720.55 × 42,707.70 - Step 4: Simplify right side
125,813.70x = 8,059,820,633.24 - Step 5: Solve for x
x = 8,059,820,633.24/125,813.70 - Step 6: Final answer
x = 64,061.55
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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.