Finding the Fourth Proportional to 115,885.98, 159,307.74 and 99,694.08
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Solution
The fourth proportional to 115,885.98, 159,307.74 and 99,694.08 is: 137,048.84
Step by Step Solution
- Step 1: Write the proportion equation
115,885.98 : 159,307.74 = 99,694.08 : x - Step 2: Convert to fraction form
115,885.98/159,307.74 = 99,694.08/x - Step 3: Cross multiply
115,885.98x = 159,307.74 × 99,694.08 - Step 4: Simplify right side
115,885.98x = 15,882,038,576.18 - Step 5: Solve for x
x = 15,882,038,576.18/115,885.98 - Step 6: Final answer
x = 137,048.84
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.