Finding the Fourth Proportional to 115,695.60, 159,612.80 and 75,394.68
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Solution
The fourth proportional to 115,695.60, 159,612.80 and 75,394.68 is: 104,013.95
Step by Step Solution
- Step 1: Write the proportion equation
115,695.60 : 159,612.80 = 75,394.68 : x - Step 2: Convert to fraction form
115,695.60/159,612.80 = 75,394.68/x - Step 3: Cross multiply
115,695.60x = 159,612.80 × 75,394.68 - Step 4: Simplify right side
115,695.60x = 12,033,955,979.90 - Step 5: Solve for x
x = 12,033,955,979.90/115,695.60 - Step 6: Final answer
x = 104,013.95
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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.