Finding the Fourth Proportional to 98,698.30, 136,207.20 and 56,249.98
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Solution
The fourth proportional to 98,698.30, 136,207.20 and 56,249.98 is: 77,626.99
Step by Step Solution
- Step 1: Write the proportion equation
98,698.30 : 136,207.20 = 56,249.98 : x - Step 2: Convert to fraction form
98,698.30/136,207.20 = 56,249.98/x - Step 3: Cross multiply
98,698.30x = 136,207.20 × 56,249.98 - Step 4: Simplify right side
98,698.30x = 7,661,652,275.86 - Step 5: Solve for x
x = 7,661,652,275.86/98,698.30 - Step 6: Final answer
x = 77,626.99
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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.