Finding the Fourth Proportional to 153,860.20, 230,855.10 and 83,789.80
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Solution
The fourth proportional to 153,860.20, 230,855.10 and 83,789.80 is: 125,719.99
Step by Step Solution
- Step 1: Write the proportion equation
153,860.20 : 230,855.10 = 83,789.80 : x - Step 2: Convert to fraction form
153,860.20/230,855.10 = 83,789.80/x - Step 3: Cross multiply
153,860.20x = 230,855.10 × 83,789.80 - Step 4: Simplify right side
153,860.20x = 19,343,302,657.98 - Step 5: Solve for x
x = 19,343,302,657.98/153,860.20 - Step 6: Final answer
x = 125,719.99
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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.