Finding the Fourth Proportional to 155,878.99, 215,094.73 and 87,891.92
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Solution
The fourth proportional to 155,878.99, 215,094.73 and 87,891.92 is: 121,280.54
Step by Step Solution
- Step 1: Write the proportion equation
155,878.99 : 215,094.73 = 87,891.92 : x - Step 2: Convert to fraction form
155,878.99/215,094.73 = 87,891.92/x - Step 3: Cross multiply
155,878.99x = 215,094.73 × 87,891.92 - Step 4: Simplify right side
155,878.99x = 18,905,088,477.78 - Step 5: Solve for x
x = 18,905,088,477.78/155,878.99 - Step 6: Final answer
x = 121,280.54
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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.