Finding the Fourth Proportional to 153,786.24, 212,263.68 and 86,757.12
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Solution
The fourth proportional to 153,786.24, 212,263.68 and 86,757.12 is: 119,746.64
Step by Step Solution
- Step 1: Write the proportion equation
153,786.24 : 212,263.68 = 86,757.12 : x - Step 2: Convert to fraction form
153,786.24/212,263.68 = 86,757.12/x - Step 3: Cross multiply
153,786.24x = 212,263.68 × 86,757.12 - Step 4: Simplify right side
153,786.24x = 18,415,385,557.40 - Step 5: Solve for x
x = 18,415,385,557.40/153,786.24 - Step 6: Final answer
x = 119,746.64
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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.