Finding the Fourth Proportional to 156,078.99, 215,389.58 and 84,459.02
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Solution
The fourth proportional to 156,078.99, 215,389.58 and 84,459.02 is: 116,553.75
Step by Step Solution
- Step 1: Write the proportion equation
156,078.99 : 215,389.58 = 84,459.02 : x - Step 2: Convert to fraction form
156,078.99/215,389.58 = 84,459.02/x - Step 3: Cross multiply
156,078.99x = 215,389.58 × 84,459.02 - Step 4: Simplify right side
156,078.99x = 18,191,592,123.74 - Step 5: Solve for x
x = 18,191,592,123.74/156,078.99 - Step 6: Final answer
x = 116,553.75
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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.