Finding the Fourth Proportional to 124,637.67, 171,979.70 and 73,643.31
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Solution
The fourth proportional to 124,637.67, 171,979.70 and 73,643.31 is: 101,615.78
Step by Step Solution
- Step 1: Write the proportion equation
124,637.67 : 171,979.70 = 73,643.31 : x - Step 2: Convert to fraction form
124,637.67/171,979.70 = 73,643.31/x - Step 3: Cross multiply
124,637.67x = 171,979.70 × 73,643.31 - Step 4: Simplify right side
124,637.67x = 12,665,153,992.59 - Step 5: Solve for x
x = 12,665,153,992.59/124,637.67 - Step 6: Final answer
x = 101,615.78
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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.