Finding the Fourth Proportional to 90,864.18, 135,605.34 and 84,848.13
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Solution
The fourth proportional to 90,864.18, 135,605.34 and 84,848.13 is: 126,627.01
Step by Step Solution
- Step 1: Write the proportion equation
90,864.18 : 135,605.34 = 84,848.13 : x - Step 2: Convert to fraction form
90,864.18/135,605.34 = 84,848.13/x - Step 3: Cross multiply
90,864.18x = 135,605.34 × 84,848.13 - Step 4: Simplify right side
90,864.18x = 11,505,859,517.01 - Step 5: Solve for x
x = 11,505,859,517.01/90,864.18 - Step 6: Final answer
x = 126,627.01
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.