Finding the Fourth Proportional to 121,623.93, 182,424.76 and 86,237.06
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Solution
The fourth proportional to 121,623.93, 182,424.76 and 86,237.06 is: 129,347.69
Step by Step Solution
- Step 1: Write the proportion equation
121,623.93 : 182,424.76 = 86,237.06 : x - Step 2: Convert to fraction form
121,623.93/182,424.76 = 86,237.06/x - Step 3: Cross multiply
121,623.93x = 182,424.76 × 86,237.06 - Step 4: Simplify right side
121,623.93x = 15,731,773,845.89 - Step 5: Solve for x
x = 15,731,773,845.89/121,623.93 - Step 6: Final answer
x = 129,347.69
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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.