Finding the Fourth Proportional to 153,215.64, 211,263.26 and 107,879.13
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Solution
The fourth proportional to 153,215.64, 211,263.26 and 107,879.13 is: 148,750.45
Step by Step Solution
- Step 1: Write the proportion equation
153,215.64 : 211,263.26 = 107,879.13 : x - Step 2: Convert to fraction form
153,215.64/211,263.26 = 107,879.13/x - Step 3: Cross multiply
153,215.64x = 211,263.26 × 107,879.13 - Step 4: Simplify right side
153,215.64x = 22,790,896,150.37 - Step 5: Solve for x
x = 22,790,896,150.37/153,215.64 - Step 6: Final answer
x = 148,750.45
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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.