Finding the Fourth Proportional to 156,833.79, 216,430.28 and 85,214.09
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Solution
The fourth proportional to 156,833.79, 216,430.28 and 85,214.09 is: 117,595.26
Step by Step Solution
- Step 1: Write the proportion equation
156,833.79 : 216,430.28 = 85,214.09 : x - Step 2: Convert to fraction form
156,833.79/216,430.28 = 85,214.09/x - Step 3: Cross multiply
156,833.79x = 216,430.28 × 85,214.09 - Step 4: Simplify right side
156,833.79x = 18,442,909,793.20 - Step 5: Solve for x
x = 18,442,909,793.20/156,833.79 - Step 6: Final answer
x = 117,595.26
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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.