Finding the Fourth Proportional to 118,140.76, 162,993.36 and 75,722.68
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Solution
The fourth proportional to 118,140.76, 162,993.36 and 75,722.68 is: 104,471.09
Step by Step Solution
- Step 1: Write the proportion equation
118,140.76 : 162,993.36 = 75,722.68 : x - Step 2: Convert to fraction form
118,140.76/162,993.36 = 75,722.68/x - Step 3: Cross multiply
118,140.76x = 162,993.36 × 75,722.68 - Step 4: Simplify right side
118,140.76x = 12,342,294,041.40 - Step 5: Solve for x
x = 12,342,294,041.40/118,140.76 - Step 6: Final answer
x = 104,471.09
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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.