Finding the Fourth Proportional to 153,518.80, 211,819.08 and 86,450.80
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Solution
The fourth proportional to 153,518.80, 211,819.08 and 86,450.80 is: 119,281.34
Step by Step Solution
- Step 1: Write the proportion equation
153,518.80 : 211,819.08 = 86,450.80 : x - Step 2: Convert to fraction form
153,518.80/211,819.08 = 86,450.80/x - Step 3: Cross multiply
153,518.80x = 211,819.08 × 86,450.80 - Step 4: Simplify right side
153,518.80x = 18,311,928,921.26 - Step 5: Solve for x
x = 18,311,928,921.26/153,518.80 - Step 6: Final answer
x = 119,281.34
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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.