Finding the Fourth Proportional to 159,439.76, 239,159.64 and 138,911.12
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Solution
The fourth proportional to 159,439.76, 239,159.64 and 138,911.12 is: 208,366.68
Step by Step Solution
- Step 1: Write the proportion equation
159,439.76 : 239,159.64 = 138,911.12 : x - Step 2: Convert to fraction form
159,439.76/239,159.64 = 138,911.12/x - Step 3: Cross multiply
159,439.76x = 239,159.64 × 138,911.12 - Step 4: Simplify right side
159,439.76x = 33,221,933,451.20 - Step 5: Solve for x
x = 33,221,933,451.20/159,439.76 - Step 6: Final answer
x = 208,366.68
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.