Finding the Fourth Proportional to 158,724.02, 219,040.80 and 87,108.68
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Solution
The fourth proportional to 158,724.02, 219,040.80 and 87,108.68 is: 120,210.89
Step by Step Solution
- Step 1: Write the proportion equation
158,724.02 : 219,040.80 = 87,108.68 : x - Step 2: Convert to fraction form
158,724.02/219,040.80 = 87,108.68/x - Step 3: Cross multiply
158,724.02x = 219,040.80 × 87,108.68 - Step 4: Simplify right side
158,724.02x = 19,080,354,954.14 - Step 5: Solve for x
x = 19,080,354,954.14/158,724.02 - Step 6: Final answer
x = 120,210.89
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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.