Finding the Fourth Proportional to 156,820.48, 216,411.09 and 85,201.09
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Solution
The fourth proportional to 156,820.48, 216,411.09 and 85,201.09 is: 117,576.87
Step by Step Solution
- Step 1: Write the proportion equation
156,820.48 : 216,411.09 = 85,201.09 : x - Step 2: Convert to fraction form
156,820.48/216,411.09 = 85,201.09/x - Step 3: Cross multiply
156,820.48x = 216,411.09 × 85,201.09 - Step 4: Simplify right side
156,820.48x = 18,438,460,756.09 - Step 5: Solve for x
x = 18,438,460,756.09/156,820.48 - Step 6: Final answer
x = 117,576.87
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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.