Finding the Fourth Proportional to 121,312.93, 167,409.60 and 66,122.73
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Solution
The fourth proportional to 121,312.93, 167,409.60 and 66,122.73 is: 91,248.14
Step by Step Solution
- Step 1: Write the proportion equation
121,312.93 : 167,409.60 = 66,122.73 : x - Step 2: Convert to fraction form
121,312.93/167,409.60 = 66,122.73/x - Step 3: Cross multiply
121,312.93x = 167,409.60 × 66,122.73 - Step 4: Simplify right side
121,312.93x = 11,069,579,780.21 - Step 5: Solve for x
x = 11,069,579,780.21/121,312.93 - Step 6: Final answer
x = 91,248.14
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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.