Finding the Fourth Proportional to 129,358.15, 194,038.07 and 45,117.99
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Solution
The fourth proportional to 129,358.15, 194,038.07 and 45,117.99 is: 67,677.28
Step by Step Solution
- Step 1: Write the proportion equation
129,358.15 : 194,038.07 = 45,117.99 : x - Step 2: Convert to fraction form
129,358.15/194,038.07 = 45,117.99/x - Step 3: Cross multiply
129,358.15x = 194,038.07 × 45,117.99 - Step 4: Simplify right side
129,358.15x = 8,754,607,476.29 - Step 5: Solve for x
x = 8,754,607,476.29/129,358.15 - Step 6: Final answer
x = 67,677.28
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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.