Finding the Fourth Proportional to 128,652,847.40, 180,591,743.80 and 128,652,847.40
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Solution
The fourth proportional to 128,652,847.40, 180,591,743.80 and 128,652,847.40 is: 180,591,743.80
Step by Step Solution
- Step 1: Write the proportion equation
128,652,847.40 : 180,591,743.80 = 128,652,847.40 : x - Step 2: Convert to fraction form
128,652,847.40/180,591,743.80 = 128,652,847.40/x - Step 3: Cross multiply
128,652,847.40x = 180,591,743.80 × 128,652,847.40 - Step 4: Simplify right side
128,652,847.40x = 23,233,642,056,801,300 - Step 5: Solve for x
x = 23,233,642,056,801,300/128,652,847.40 - Step 6: Final answer
x = 180,591,743.80
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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.