Finding the Fourth Proportional to 122,281.20, 168,756.12 and 68,569.65
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Solution
The fourth proportional to 122,281.20, 168,756.12 and 68,569.65 is: 94,630.64
Step by Step Solution
- Step 1: Write the proportion equation
122,281.20 : 168,756.12 = 68,569.65 : x - Step 2: Convert to fraction form
122,281.20/168,756.12 = 68,569.65/x - Step 3: Cross multiply
122,281.20x = 168,756.12 × 68,569.65 - Step 4: Simplify right side
122,281.20x = 11,571,548,083.76 - Step 5: Solve for x
x = 11,571,548,083.76/122,281.20 - Step 6: Final answer
x = 94,630.64
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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.