Finding the Fourth Proportional to 135,510.99, 186,998.86 and 74,256.81
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Solution
The fourth proportional to 135,510.99, 186,998.86 and 74,256.81 is: 102,470.95
Step by Step Solution
- Step 1: Write the proportion equation
135,510.99 : 186,998.86 = 74,256.81 : x - Step 2: Convert to fraction form
135,510.99/186,998.86 = 74,256.81/x - Step 3: Cross multiply
135,510.99x = 186,998.86 × 74,256.81 - Step 4: Simplify right side
135,510.99x = 13,885,939,260.68 - Step 5: Solve for x
x = 13,885,939,260.68/135,510.99 - Step 6: Final answer
x = 102,470.95
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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.