Finding the Fourth Proportional to 100,155.18, 138,214.18 and 54,836.04
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Solution
The fourth proportional to 100,155.18, 138,214.18 and 54,836.04 is: 75,673.75
Step by Step Solution
- Step 1: Write the proportion equation
100,155.18 : 138,214.18 = 54,836.04 : x - Step 2: Convert to fraction form
100,155.18/138,214.18 = 54,836.04/x - Step 3: Cross multiply
100,155.18x = 138,214.18 × 54,836.04 - Step 4: Simplify right side
100,155.18x = 7,579,118,303.05 - Step 5: Solve for x
x = 7,579,118,303.05/100,155.18 - Step 6: Final answer
x = 75,673.75
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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.