Finding the Fourth Proportional to 134,835.80, 202,420.10 and 84,915.80
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Solution
The fourth proportional to 134,835.80, 202,420.10 and 84,915.80 is: 127,478.49
Step by Step Solution
- Step 1: Write the proportion equation
134,835.80 : 202,420.10 = 84,915.80 : x - Step 2: Convert to fraction form
134,835.80/202,420.10 = 84,915.80/x - Step 3: Cross multiply
134,835.80x = 202,420.10 × 84,915.80 - Step 4: Simplify right side
134,835.80x = 17,188,664,727.58 - Step 5: Solve for x
x = 17,188,664,727.58/134,835.80 - Step 6: Final answer
x = 127,478.49
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1.5x scale
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.