Finding the Fourth Proportional to 130,669.18, 195,756.48 and 77,201.28
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Solution
The fourth proportional to 130,669.18, 195,756.48 and 77,201.28 is: 115,655.82
Step by Step Solution
- Step 1: Write the proportion equation
130,669.18 : 195,756.48 = 77,201.28 : x - Step 2: Convert to fraction form
130,669.18/195,756.48 = 77,201.28/x - Step 3: Cross multiply
130,669.18x = 195,756.48 × 77,201.28 - Step 4: Simplify right side
130,669.18x = 15,112,650,824.29 - Step 5: Solve for x
x = 15,112,650,824.29/130,669.18 - Step 6: Final answer
x = 115,655.82
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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.