Finding the Fourth Proportional to 143,843.10, 215,730.09 and 73,686.30
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Solution
The fourth proportional to 143,843.10, 215,730.09 and 73,686.30 is: 110,511.75
Step by Step Solution
- Step 1: Write the proportion equation
143,843.10 : 215,730.09 = 73,686.30 : x - Step 2: Convert to fraction form
143,843.10/215,730.09 = 73,686.30/x - Step 3: Cross multiply
143,843.10x = 215,730.09 × 73,686.30 - Step 4: Simplify right side
143,843.10x = 15,896,352,130.77 - Step 5: Solve for x
x = 15,896,352,130.77/143,843.10 - Step 6: Final answer
x = 110,511.75
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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.