Finding the Fourth Proportional to 115,781.40, 159,809.76 and 68,050.08
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Solution
The fourth proportional to 115,781.40, 159,809.76 and 68,050.08 is: 93,927.58
Step by Step Solution
- Step 1: Write the proportion equation
115,781.40 : 159,809.76 = 68,050.08 : x - Step 2: Convert to fraction form
115,781.40/159,809.76 = 68,050.08/x - Step 3: Cross multiply
115,781.40x = 159,809.76 × 68,050.08 - Step 4: Simplify right side
115,781.40x = 10,875,066,952.78 - Step 5: Solve for x
x = 10,875,066,952.78/115,781.40 - Step 6: Final answer
x = 93,927.58
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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.