Finding the Fourth Proportional to 130,428.96, 179,992.16 and 70,812.96
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Solution
The fourth proportional to 130,428.96, 179,992.16 and 70,812.96 is: 97,721.99
Step by Step Solution
- Step 1: Write the proportion equation
130,428.96 : 179,992.16 = 70,812.96 : x - Step 2: Convert to fraction form
130,428.96/179,992.16 = 70,812.96/x - Step 3: Cross multiply
130,428.96x = 179,992.16 × 70,812.96 - Step 4: Simplify right side
130,428.96x = 12,745,777,626.39 - Step 5: Solve for x
x = 12,745,777,626.39/130,428.96 - Step 6: Final answer
x = 97,721.99
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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.