Finding the Fourth Proportional to 107,016.21, 147,681.99 and 61,693.99
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Solution
The fourth proportional to 107,016.21, 147,681.99 and 61,693.99 is: 85,137.48
Step by Step Solution
- Step 1: Write the proportion equation
107,016.21 : 147,681.99 = 61,693.99 : x - Step 2: Convert to fraction form
107,016.21/147,681.99 = 61,693.99/x - Step 3: Cross multiply
107,016.21x = 147,681.99 × 61,693.99 - Step 4: Simplify right side
107,016.21x = 9,111,090,845.04 - Step 5: Solve for x
x = 9,111,090,845.04/107,016.21 - Step 6: Final answer
x = 85,137.48
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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.