Finding the Fourth Proportional to 103,498.65, 155,247.98 and 84,799.80
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Solution
The fourth proportional to 103,498.65, 155,247.98 and 84,799.80 is: 127,199.70
Step by Step Solution
- Step 1: Write the proportion equation
103,498.65 : 155,247.98 = 84,799.80 : x - Step 2: Convert to fraction form
103,498.65/155,247.98 = 84,799.80/x - Step 3: Cross multiply
103,498.65x = 155,247.98 × 84,799.80 - Step 4: Simplify right side
103,498.65x = 13,164,997,230.41 - Step 5: Solve for x
x = 13,164,997,230.41/103,498.65 - Step 6: Final answer
x = 127,199.70
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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.