Finding the Fourth Proportional to 115,828.20, 159,861.06 and 83,985.48
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Solution
The fourth proportional to 115,828.20, 159,861.06 and 83,985.48 is: 115,913.12
Step by Step Solution
- Step 1: Write the proportion equation
115,828.20 : 159,861.06 = 83,985.48 : x - Step 2: Convert to fraction form
115,828.20/159,861.06 = 83,985.48/x - Step 3: Cross multiply
115,828.20x = 159,861.06 × 83,985.48 - Step 4: Simplify right side
115,828.20x = 13,426,007,857.41 - Step 5: Solve for x
x = 13,426,007,857.41/115,828.20 - Step 6: Final answer
x = 115,913.12
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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.