Finding the Fourth Proportional to 130,669.68, 195,757.80 and 77,202.12
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Solution
The fourth proportional to 130,669.68, 195,757.80 and 77,202.12 is: 115,657.41
Step by Step Solution
- Step 1: Write the proportion equation
130,669.68 : 195,757.80 = 77,202.12 : x - Step 2: Convert to fraction form
130,669.68/195,757.80 = 77,202.12/x - Step 3: Cross multiply
130,669.68x = 195,757.80 × 77,202.12 - Step 4: Simplify right side
130,669.68x = 15,112,917,166.54 - Step 5: Solve for x
x = 15,112,917,166.54/130,669.68 - Step 6: Final answer
x = 115,657.41
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.