Finding the Fourth Proportional to 150,055.58, 207,128.85 and 86,418.74
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Solution
The fourth proportional to 150,055.58, 207,128.85 and 86,418.74 is: 119,287.89
Step by Step Solution
- Step 1: Write the proportion equation
150,055.58 : 207,128.85 = 86,418.74 : x - Step 2: Convert to fraction form
150,055.58/207,128.85 = 86,418.74/x - Step 3: Cross multiply
150,055.58x = 207,128.85 × 86,418.74 - Step 4: Simplify right side
150,055.58x = 17,899,814,234.65 - Step 5: Solve for x
x = 17,899,814,234.65/150,055.58 - Step 6: Final answer
x = 119,287.89
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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.