Finding the Fourth Proportional to 99,206.36, 136,829.76 and 68,976.55
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Solution
The fourth proportional to 99,206.36, 136,829.76 and 68,976.55 is: 95,135.48
Step by Step Solution
- Step 1: Write the proportion equation
99,206.36 : 136,829.76 = 68,976.55 : x - Step 2: Convert to fraction form
99,206.36/136,829.76 = 68,976.55/x - Step 3: Cross multiply
99,206.36x = 136,829.76 × 68,976.55 - Step 4: Simplify right side
99,206.36x = 9,438,044,782.13 - Step 5: Solve for x
x = 9,438,044,782.13/99,206.36 - Step 6: Final answer
x = 95,135.48
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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.