Finding the Fourth Proportional to 156,629.98, 216,149.57 and 85,009.99
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Solution
The fourth proportional to 156,629.98, 216,149.57 and 85,009.99 is: 117,313.89
Step by Step Solution
- Step 1: Write the proportion equation
156,629.98 : 216,149.57 = 85,009.99 : x - Step 2: Convert to fraction form
156,629.98/216,149.57 = 85,009.99/x - Step 3: Cross multiply
156,629.98x = 216,149.57 × 85,009.99 - Step 4: Simplify right side
156,629.98x = 18,374,872,784.20 - Step 5: Solve for x
x = 18,374,872,784.20/156,629.98 - Step 6: Final answer
x = 117,313.89
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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.