Finding the Fourth Proportional to 91,853,999.70, 128,765,660.70 and 91,853,999.70
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Solution
The fourth proportional to 91,853,999.70, 128,765,660.70 and 91,853,999.70 is: 128,765,660.70
Step by Step Solution
- Step 1: Write the proportion equation
91,853,999.70 : 128,765,660.70 = 91,853,999.70 : x - Step 2: Convert to fraction form
91,853,999.70/128,765,660.70 = 91,853,999.70/x - Step 3: Cross multiply
91,853,999.70x = 128,765,660.70 × 91,853,999.70 - Step 4: Simplify right side
91,853,999.70x = 11,827,640,959,308,102 - Step 5: Solve for x
x = 11,827,640,959,308,102/91,853,999.70 - Step 6: Final answer
x = 128,765,660.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.