Finding the Fourth Proportional to 129,854.08, 194,781.12 and 31,358.08
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Solution
The fourth proportional to 129,854.08, 194,781.12 and 31,358.08 is: 47,037.12
Step by Step Solution
- Step 1: Write the proportion equation
129,854.08 : 194,781.12 = 31,358.08 : x - Step 2: Convert to fraction form
129,854.08/194,781.12 = 31,358.08/x - Step 3: Cross multiply
129,854.08x = 194,781.12 × 31,358.08 - Step 4: Simplify right side
129,854.08x = 6,107,961,943.45 - Step 5: Solve for x
x = 6,107,961,943.45/129,854.08 - Step 6: Final answer
x = 47,037.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.