Finding the Fourth Proportional to 156,396.23, 215,820.99 and 84,774.71
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Solution
The fourth proportional to 156,396.23, 215,820.99 and 84,774.71 is: 116,985.96
Step by Step Solution
- Step 1: Write the proportion equation
156,396.23 : 215,820.99 = 84,774.71 : x - Step 2: Convert to fraction form
156,396.23/215,820.99 = 84,774.71/x - Step 3: Cross multiply
156,396.23x = 215,820.99 × 84,774.71 - Step 4: Simplify right side
156,396.23x = 18,296,162,166.78 - Step 5: Solve for x
x = 18,296,162,166.78/156,396.23 - Step 6: Final answer
x = 116,985.96
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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.