Finding the Fourth Proportional to 124,551.54, 171,908.73 and 79,220.70
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Solution
The fourth proportional to 124,551.54, 171,908.73 and 79,220.70 is: 109,342.12
Step by Step Solution
- Step 1: Write the proportion equation
124,551.54 : 171,908.73 = 79,220.70 : x - Step 2: Convert to fraction form
124,551.54/171,908.73 = 79,220.70/x - Step 3: Cross multiply
124,551.54x = 171,908.73 × 79,220.70 - Step 4: Simplify right side
124,551.54x = 13,618,729,926.71 - Step 5: Solve for x
x = 13,618,729,926.71/124,551.54 - Step 6: Final answer
x = 109,342.12
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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.