Finding the Fourth Proportional to 130,998.25, 180,769.08 and 77,270.95
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Solution
The fourth proportional to 130,998.25, 180,769.08 and 77,270.95 is: 106,628.89
Step by Step Solution
- Step 1: Write the proportion equation
130,998.25 : 180,769.08 = 77,270.95 : x - Step 2: Convert to fraction form
130,998.25/180,769.08 = 77,270.95/x - Step 3: Cross multiply
130,998.25x = 180,769.08 × 77,270.95 - Step 4: Simplify right side
130,998.25x = 13,968,198,542.23 - Step 5: Solve for x
x = 13,968,198,542.23/130,998.25 - Step 6: Final answer
x = 106,628.89
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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.