Finding the Fourth Proportional to 124,803.24, 172,235.40 and 71,105.10
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Solution
The fourth proportional to 124,803.24, 172,235.40 and 71,105.10 is: 98,128.99
Step by Step Solution
- Step 1: Write the proportion equation
124,803.24 : 172,235.40 = 71,105.10 : x - Step 2: Convert to fraction form
124,803.24/172,235.40 = 71,105.10/x - Step 3: Cross multiply
124,803.24x = 172,235.40 × 71,105.10 - Step 4: Simplify right side
124,803.24x = 12,246,815,340.54 - Step 5: Solve for x
x = 12,246,815,340.54/124,803.24 - Step 6: Final answer
x = 98,128.99
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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.