Finding the Fourth Proportional to 136,637.90, 188,560.58 and 76,206.99
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Solution
The fourth proportional to 136,637.90, 188,560.58 and 76,206.99 is: 105,165.80
Step by Step Solution
- Step 1: Write the proportion equation
136,637.90 : 188,560.58 = 76,206.99 : x - Step 2: Convert to fraction form
136,637.90/188,560.58 = 76,206.99/x - Step 3: Cross multiply
136,637.90x = 188,560.58 × 76,206.99 - Step 4: Simplify right side
136,637.90x = 14,369,633,612.54 - Step 5: Solve for x
x = 14,369,633,612.54/136,637.90 - Step 6: Final answer
x = 105,165.80
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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.