Finding the Fourth Proportional to 115,537.80, 173,306.70 and 99,985.80
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Solution
The fourth proportional to 115,537.80, 173,306.70 and 99,985.80 is: 149,978.70
Step by Step Solution
- Step 1: Write the proportion equation
115,537.80 : 173,306.70 = 99,985.80 : x - Step 2: Convert to fraction form
115,537.80/173,306.70 = 99,985.80/x - Step 3: Cross multiply
115,537.80x = 173,306.70 × 99,985.80 - Step 4: Simplify right side
115,537.80x = 17,328,209,044.86 - Step 5: Solve for x
x = 17,328,209,044.86/115,537.80 - Step 6: Final answer
x = 149,978.70
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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.