Finding the Fourth Proportional to 156,758.12, 216,201.12 and 103,098.26
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Solution
The fourth proportional to 156,758.12, 216,201.12 and 103,098.26 is: 142,193.33
Step by Step Solution
- Step 1: Write the proportion equation
156,758.12 : 216,201.12 = 103,098.26 : x - Step 2: Convert to fraction form
156,758.12/216,201.12 = 103,098.26/x - Step 3: Cross multiply
156,758.12x = 216,201.12 × 103,098.26 - Step 4: Simplify right side
156,758.12x = 22,289,959,282.05 - Step 5: Solve for x
x = 22,289,959,282.05/156,758.12 - Step 6: Final answer
x = 142,193.33
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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.