Finding the Fourth Proportional to 156,898.05, 216,519.58 and 85,277.88
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Solution
The fourth proportional to 156,898.05, 216,519.58 and 85,277.88 is: 117,683.63
Step by Step Solution
- Step 1: Write the proportion equation
156,898.05 : 216,519.58 = 85,277.88 : x - Step 2: Convert to fraction form
156,898.05/216,519.58 = 85,277.88/x - Step 3: Cross multiply
156,898.05x = 216,519.58 × 85,277.88 - Step 4: Simplify right side
156,898.05x = 18,464,330,867.49 - Step 5: Solve for x
x = 18,464,330,867.49/156,898.05 - Step 6: Final answer
x = 117,683.63
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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.