Finding the Fourth Proportional to 156,739.36, 216,294.36 and 85,117.84
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Solution
The fourth proportional to 156,739.36, 216,294.36 and 85,117.84 is: 117,459.38
Step by Step Solution
- Step 1: Write the proportion equation
156,739.36 : 216,294.36 = 85,117.84 : x - Step 2: Convert to fraction form
156,739.36/216,294.36 = 85,117.84/x - Step 3: Cross multiply
156,739.36x = 216,294.36 × 85,117.84 - Step 4: Simplify right side
156,739.36x = 18,410,508,727.38 - Step 5: Solve for x
x = 18,410,508,727.38/156,739.36 - Step 6: Final answer
x = 117,459.38
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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.