Finding the Fourth Proportional to 104,136.79, 143,708.56 and 56,389.99
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Solution
The fourth proportional to 104,136.79, 143,708.56 and 56,389.99 is: 77,818.07
Step by Step Solution
- Step 1: Write the proportion equation
104,136.79 : 143,708.56 = 56,389.99 : x - Step 2: Convert to fraction form
104,136.79/143,708.56 = 56,389.99/x - Step 3: Cross multiply
104,136.79x = 143,708.56 × 56,389.99 - Step 4: Simplify right side
104,136.79x = 8,103,724,261.31 - Step 5: Solve for x
x = 8,103,724,261.31/104,136.79 - Step 6: Final answer
x = 77,818.07
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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.