Finding the Fourth Proportional to 118,928.18, 164,206.99 and 76,560.52
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Solution
The fourth proportional to 118,928.18, 164,206.99 and 76,560.52 is: 105,708.95
Step by Step Solution
- Step 1: Write the proportion equation
118,928.18 : 164,206.99 = 76,560.52 : x - Step 2: Convert to fraction form
118,928.18/164,206.99 = 76,560.52/x - Step 3: Cross multiply
118,928.18x = 164,206.99 × 76,560.52 - Step 4: Simplify right side
118,928.18x = 12,571,772,542.03 - Step 5: Solve for x
x = 12,571,772,542.03/118,928.18 - Step 6: Final answer
x = 105,708.95
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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.