Finding the Fourth Proportional to 122,270.81, 168,731.55 and 68,555.66
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Solution
The fourth proportional to 122,270.81, 168,731.55 and 68,555.66 is: 94,605.59
Step by Step Solution
- Step 1: Write the proportion equation
122,270.81 : 168,731.55 = 68,555.66 : x - Step 2: Convert to fraction form
122,270.81/168,731.55 = 68,555.66/x - Step 3: Cross multiply
122,270.81x = 168,731.55 × 68,555.66 - Step 4: Simplify right side
122,270.81x = 11,567,501,929.42 - Step 5: Solve for x
x = 11,567,501,929.42/122,270.81 - Step 6: Final answer
x = 94,605.59
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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.