Finding the Fourth Proportional to 120,270.76, 165,863.99 and 103,269.67
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Solution
The fourth proportional to 120,270.76, 165,863.99 and 103,269.67 is: 142,417.99
Step by Step Solution
- Step 1: Write the proportion equation
120,270.76 : 165,863.99 = 103,269.67 : x - Step 2: Convert to fraction form
120,270.76/165,863.99 = 103,269.67/x - Step 3: Cross multiply
120,270.76x = 165,863.99 × 103,269.67 - Step 4: Simplify right side
120,270.76x = 17,128,719,355.70 - Step 5: Solve for x
x = 17,128,719,355.70/120,270.76 - Step 6: Final answer
x = 142,417.99
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1.5x scale
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.