Finding the Fourth Proportional to 118,948.68, 164,124.36 and 80,737.80
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Solution
The fourth proportional to 118,948.68, 164,124.36 and 80,737.80 is: 111,401.32
Step by Step Solution
- Step 1: Write the proportion equation
118,948.68 : 164,124.36 = 80,737.80 : x - Step 2: Convert to fraction form
118,948.68/164,124.36 = 80,737.80/x - Step 3: Cross multiply
118,948.68x = 164,124.36 × 80,737.80 - Step 4: Simplify right side
118,948.68x = 13,251,039,752.81 - Step 5: Solve for x
x = 13,251,039,752.81/118,948.68 - Step 6: Final answer
x = 111,401.32
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1.5x scale
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.