Finding the Fourth Proportional to 156,965.68, 216,611.50 and 85,345.75
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Solution
The fourth proportional to 156,965.68, 216,611.50 and 85,345.75 is: 117,776.52
Step by Step Solution
- Step 1: Write the proportion equation
156,965.68 : 216,611.50 = 85,345.75 : x - Step 2: Convert to fraction form
156,965.68/216,611.50 = 85,345.75/x - Step 3: Cross multiply
156,965.68x = 216,611.50 × 85,345.75 - Step 4: Simplify right side
156,965.68x = 18,486,870,926.13 - Step 5: Solve for x
x = 18,486,870,926.13/156,965.68 - Step 6: Final answer
x = 117,776.52
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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.