Finding the Fourth Proportional to 151,873.12, 209,683.44 and 135,929.92
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Solution
The fourth proportional to 151,873.12, 209,683.44 and 135,929.92 is: 187,671.48
Step by Step Solution
- Step 1: Write the proportion equation
151,873.12 : 209,683.44 = 135,929.92 : x - Step 2: Convert to fraction form
151,873.12/209,683.44 = 135,929.92/x - Step 3: Cross multiply
151,873.12x = 209,683.44 × 135,929.92 - Step 4: Simplify right side
151,873.12x = 28,502,253,224.52 - Step 5: Solve for x
x = 28,502,253,224.52/151,873.12 - Step 6: Final answer
x = 187,671.48
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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.