Finding the Fourth Proportional to 139,052.16, 191,892.40 and 75,389.99
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Solution
The fourth proportional to 139,052.16, 191,892.40 and 75,389.99 is: 104,038.41
Step by Step Solution
- Step 1: Write the proportion equation
139,052.16 : 191,892.40 = 75,389.99 : x - Step 2: Convert to fraction form
139,052.16/191,892.40 = 75,389.99/x - Step 3: Cross multiply
139,052.16x = 191,892.40 × 75,389.99 - Step 4: Simplify right side
139,052.16x = 14,466,764,969.14 - Step 5: Solve for x
x = 14,466,764,969.14/139,052.16 - Step 6: Final answer
x = 104,038.41
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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.