Finding the Fourth Proportional to 118,030.99, 162,711.28 and 81,677.05
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Solution
The fourth proportional to 118,030.99, 162,711.28 and 81,677.05 is: 112,595.66
Step by Step Solution
- Step 1: Write the proportion equation
118,030.99 : 162,711.28 = 81,677.05 : x - Step 2: Convert to fraction form
118,030.99/162,711.28 = 81,677.05/x - Step 3: Cross multiply
118,030.99x = 162,711.28 × 81,677.05 - Step 4: Simplify right side
118,030.99x = 13,289,777,352.12 - Step 5: Solve for x
x = 13,289,777,352.12/118,030.99 - Step 6: Final answer
x = 112,595.66
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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.