Finding the Fourth Proportional to 122,133.57, 168,554.70 and 68,417.88
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Solution
The fourth proportional to 122,133.57, 168,554.70 and 68,417.88 is: 94,422.49
Step by Step Solution
- Step 1: Write the proportion equation
122,133.57 : 168,554.70 = 68,417.88 : x - Step 2: Convert to fraction form
122,133.57/168,554.70 = 68,417.88/x - Step 3: Cross multiply
122,133.57x = 168,554.70 × 68,417.88 - Step 4: Simplify right side
122,133.57x = 11,532,155,238.04 - Step 5: Solve for x
x = 11,532,155,238.04/122,133.57 - Step 6: Final answer
x = 94,422.49
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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.