Finding the Fourth Proportional to 156,756.67, 216,325.79 and 85,138.09
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Solution
The fourth proportional to 156,756.67, 216,325.79 and 85,138.09 is: 117,491.42
Step by Step Solution
- Step 1: Write the proportion equation
156,756.67 : 216,325.79 = 85,138.09 : x - Step 2: Convert to fraction form
156,756.67/216,325.79 = 85,138.09/x - Step 3: Cross multiply
156,756.67x = 216,325.79 × 85,138.09 - Step 4: Simplify right side
156,756.67x = 18,417,563,931.10 - Step 5: Solve for x
x = 18,417,563,931.10/156,756.67 - Step 6: Final answer
x = 117,491.42
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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.