Finding the Fourth Proportional to 121,688.52, 167,919.21 and 67,966.08
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Solution
The fourth proportional to 121,688.52, 167,919.21 and 67,966.08 is: 93,787.08
Step by Step Solution
- Step 1: Write the proportion equation
121,688.52 : 167,919.21 = 67,966.08 : x - Step 2: Convert to fraction form
121,688.52/167,919.21 = 67,966.08/x - Step 3: Cross multiply
121,688.52x = 167,919.21 × 67,966.08 - Step 4: Simplify right side
121,688.52x = 11,412,810,460.40 - Step 5: Solve for x
x = 11,412,810,460.40/121,688.52 - Step 6: Final answer
x = 93,787.08
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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.