Finding the Fourth Proportional to 153,199.08, 211,412.64 and 86,131.08
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Solution
The fourth proportional to 153,199.08, 211,412.64 and 86,131.08 is: 118,859.72
Step by Step Solution
- Step 1: Write the proportion equation
153,199.08 : 211,412.64 = 86,131.08 : x - Step 2: Convert to fraction form
153,199.08/211,412.64 = 86,131.08/x - Step 3: Cross multiply
153,199.08x = 211,412.64 × 86,131.08 - Step 4: Simplify right side
153,199.08x = 18,209,199,008.85 - Step 5: Solve for x
x = 18,209,199,008.85/153,199.08 - Step 6: Final answer
x = 118,859.72
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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.