Finding the Fourth Proportional to 156,753.08, 216,319.20 and 85,133.12
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Solution
The fourth proportional to 156,753.08, 216,319.20 and 85,133.12 is: 117,483.68
Step by Step Solution
- Step 1: Write the proportion equation
156,753.08 : 216,319.20 = 85,133.12 : x - Step 2: Convert to fraction form
156,753.08/216,319.20 = 85,133.12/x - Step 3: Cross multiply
156,753.08x = 216,319.20 × 85,133.12 - Step 4: Simplify right side
156,753.08x = 18,415,928,411.90 - Step 5: Solve for x
x = 18,415,928,411.90/156,753.08 - Step 6: Final answer
x = 117,483.68
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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.