Finding the Fourth Proportional to 125,329.68, 172,963.76 and 71,622.63
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Solution
The fourth proportional to 125,329.68, 172,963.76 and 71,622.63 is: 98,844.26
Step by Step Solution
- Step 1: Write the proportion equation
125,329.68 : 172,963.76 = 71,622.63 : x - Step 2: Convert to fraction form
125,329.68/172,963.76 = 71,622.63/x - Step 3: Cross multiply
125,329.68x = 172,963.76 × 71,622.63 - Step 4: Simplify right side
125,329.68x = 12,388,119,027.78 - Step 5: Solve for x
x = 12,388,119,027.78/125,329.68 - Step 6: Final answer
x = 98,844.26
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.