Finding the Fourth Proportional to 109,472.17, 150,991.81 and 83,688.99
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Solution
The fourth proportional to 109,472.17, 150,991.81 and 83,688.99 is: 115,429.81
Step by Step Solution
- Step 1: Write the proportion equation
109,472.17 : 150,991.81 = 83,688.99 : x - Step 2: Convert to fraction form
109,472.17/150,991.81 = 83,688.99/x - Step 3: Cross multiply
109,472.17x = 150,991.81 × 83,688.99 - Step 4: Simplify right side
109,472.17x = 12,636,352,077.17 - Step 5: Solve for x
x = 12,636,352,077.17/109,472.17 - Step 6: Final answer
x = 115,429.81
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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.