Finding the Fourth Proportional to 153,269.12, 211,509.32 and 86,201.12
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Solution
The fourth proportional to 153,269.12, 211,509.32 and 86,201.12 is: 118,956.38
Step by Step Solution
- Step 1: Write the proportion equation
153,269.12 : 211,509.32 = 86,201.12 : x - Step 2: Convert to fraction form
153,269.12/211,509.32 = 86,201.12/x - Step 3: Cross multiply
153,269.12x = 211,509.32 × 86,201.12 - Step 4: Simplify right side
153,269.12x = 18,232,340,274.44 - Step 5: Solve for x
x = 18,232,340,274.44/153,269.12 - Step 6: Final answer
x = 118,956.38
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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.