Finding the Fourth Proportional to 156,900.96, 216,525.53 and 85,280.99
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Solution
The fourth proportional to 156,900.96, 216,525.53 and 85,280.99 is: 117,688.96
Step by Step Solution
- Step 1: Write the proportion equation
156,900.96 : 216,525.53 = 85,280.99 : x - Step 2: Convert to fraction form
156,900.96/216,525.53 = 85,280.99/x - Step 3: Cross multiply
156,900.96x = 216,525.53 × 85,280.99 - Step 4: Simplify right side
156,900.96x = 18,465,510,689.25 - Step 5: Solve for x
x = 18,465,510,689.25/156,900.96 - Step 6: Final answer
x = 117,688.96
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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.